Spatial Audio & Immersive Music for Brass Band: Marching Band, Second Line & Balkan Brass
Spatial9 Team · · Updated · 14 min read
Part of the series Spatial audio and immersive music by genre.
Key takeaways
- Immersive brass band music places trumpets front left and trombones front right so their call and response is easy to follow.
- The sousaphone holds the bass in the centre with the bass drum at front centre, while the snare drum cracks from the right side.
- Crowd shouts behind left and raised street echo behind right put the listener inside a marching parade.
- Brass band scores width 5, height 2, movement 2, low-end focus 3 and space 3 out of 5, and spread-out horns need less treble to be heard.
Brass band music covers street and marching bands built around horns and drums. Think of New Orleans second-line bands, funk and hip-hop brass bands, Balkan brass, Mexican banda and festival marching bands. Trumpets carry the melody, trombones slide and punch, a sousaphone or tuba plays the bassline, saxophones add color, and snare and bass drums drive the groove. The music is loud, joyful and often played outdoors while moving through a crowd. This guide covers how spatial audio for brass band music works, where to place each element and how to make an immersive brass band mix. For the basics, see what spatial audio is.
Why brass band music is perfect for spatial audio
Brass bands are made of sections that talk to each other. The trumpets call, the trombones answer, the saxophones fill in and the drums push everything forward. In stereo, all those horns share the same two speakers, and the loud, bright sounds can blur into one block of brass. In spatial audio, each section gets its own direction, so the call and response becomes easy to hear.
Brass bands also play in the open, surrounded by people. An immersive mix can bring that street atmosphere, with the crowd and echoes around the listener.
The rule: spread the horn sections across the front and let the street crowd fill in behind the listener.
Immersive music for brass band: what listeners hear
- Horns with their own place. Trumpets, trombones and saxes each come from a clear direction.
- Call and response. The conversation between sections is easy to follow.
- A big, bouncing low end. The sousaphone holds the groove in the centre.
- The street around you. Crowd and echoes make it feel like a parade.
Where to place each element in a brass band mix
| Element | Position | Height | Why it works |
|---|---|---|---|
| Trumpets | Front left | Ear level | The melody section leads from the front |
| Trombones | Front right | Ear level | Answers the trumpets from the other side |
| Bass drum | Front centre | Ear level | Drives the march from the middle |
| Sousaphone | Centre | Ear level | Low notes are hard to place, so centre is cleanest |
| Saxophones | Left side | Ear level | Fills and solos sit beside the trumpets |
| Snare drum | Right side | Ear level | A crisp backbeat from the side |
| Crowd and shouts | Behind left | Ear level | Puts the listener inside the parade |
| Street echo | Behind right | Raised | Reflections from buildings add a sense of place |
The psychoacoustics behind brass band placement
- Grouping by location. Keeping each horn section in one place helps the brain hear it as one group (Bregman, 1990).
- Spatial release from masking. Loud, bright horns are easier to tell apart when they come from different directions (Bronkhorst, 2000).
- The precedence effect. The first sound to arrive sets the direction, so street echoes add space without moving the band (Litovsky et al., 1999).
- Sub-bass is non-directional. The lowest sousaphone notes cannot be placed easily, so they belong in the centre (Blauert, 1997).
The immersion profile for brass band
Tips for an immersive brass band mix
- Split the sections. Trumpets and trombones on opposite sides make the call and response clear.
- Keep the sousaphone centred. It is the heartbeat of the band.
- Separate the drums. Bass drum in front and snare to the side keeps the groove clear.
- Use the crowd for energy. A little crowd sound behind you makes it feel like a real parade.
- Do not over-brighten. With horns spread out, you need less treble to hear them clearly.
Brass Band styles: marching band, second line and Balkan brass
The core placement from this guide still applies, with trumpets and trombones on opposite sides, the bass drum and sousaphone centred and the street around you. What changes per style is the size of the band, the drums and the kind of space.
Marching band
A marching band is a large ensemble of brass, woodwinds and a drumline of snares, tenor drums, bass drums and cymbals, often heard on an open field. Use the full width: spread the brass and woodwind sections across the front and sides, and the drumline across the front with the bass drums kept centred. The space is open and outdoor, so use a wide, airy ambience with little height rather than a hall.
Second line
Second line is the New Orleans street parade tradition, with a brass band playing and a crowd of dancers following behind. This is the style the main placement is built around. Keep the sousaphone bass line solid in the centre, the bass drum front centre and the snare to the right. Bring the crowd and shouts up behind left, and let the street echo behind right give a sense of buildings around you.
Balkan brass
Balkan brass is fast and dance driven, often in odd meters, with trumpets and flugelhorns playing ornamented melodies over tubas and a large double headed drum. Place the lead trumpets front left and the answering horns front right, with the tubas centred for the bass and off beats. The large drum takes the bass drum position at front centre. Use a lively, slightly tighter room, like a busy dance hall or courtyard.
Dolby Atmos and object-based mixing for brass band music
Dolby Atmos mixes brass band music as a channel bed plus objects placed anywhere in the room. Most listeners will hear the mix on headphones through binaural rendering on Apple Music, Tidal or Amazon Music. Spatial9 helps plan placements for every format so your mix translates well. The channel bed handles the low end and wide street ambience, while objects allow you to place the horns and drums precisely around the listener. This creates a lively, outdoor parade feel that works across all playback systems.
How the Atmos plan differs from the placement map. The Atmos plan moves the sousaphone from behind the listener to the front centre bed to keep the low end focused and phase-coherent. The trumpets and trombones are pulled slightly off the front wall to add depth. The crowd and shouts remain in the rear, but the street echo is routed to a full bed rather than a single point behind right, creating a realistic outdoor space.
Beds and objects for each brass band music element
| Element | Atmos role | Where it plays in 7.1.4 | Binaural mode | Why |
|---|---|---|---|---|
| Trumpets | Object | Ear level, front of the room, left (X -0.2, Y 0.8, Z 0) | Near | Main melody leads from the front left centre. |
| Trombones | Object, small size | Ear level, front of the room, right (X 0.4, Y 0.7, Z 0) | Mid | Answers the trumpets from the right side. |
| Sousaphone | Bed | Centre plus LFE (C + LFE) | Off | Low frequencies anchor the groove in the centre. |
| Saxophones | Object, small size, moving | Ear level, front of the room, left (X -0.6, Y 0.5, Z 0). Moving: Steps forward for a featured solo then steps back, ending at ear level, front of the room, left | Mid | Fills out the left side and supports. |
| Snare drum | Object | Ear level, front of the room, right (X 0.6, Y 0.5, Z 0) | Mid | Provides a crisp backbeat from the right. |
| Bass drum | Bed | Centre plus LFE (C + LFE) | Off | Drives the march from the centre. |
| Crowd and shouts | Bed | Rear surrounds (Lrs/Rrs) | Far | Puts the listener inside the parade. |
| Street echo | Bed | Whole 7.1.2 bed | Far | Envelops the listener in the outdoor atmosphere. |
Dolby Atmos settings for brass band music
- LFE. Route the bass drum and sousaphone to the LFE channel through the bed, as objects have no LFE send.
- Object size. Keep horn objects small or point size to maintain focus and separation during call and response parts.
- Height use. Reserve the height channels for street echo and ambience to keep the brass band music grounded.
- Binaural render modes. Set the sousaphone and bass drum to off, horns to mid or near, and crowd to far.
- Front stage. Keep the main trumpets and trombones between the front speakers to anchor the brass band music performance.
Brass band music across immersive formats
| Format | How it carries sound | What it means for brass band music |
|---|---|---|
| Dolby Atmos | Hybrid: a 7.1.2 channel bed plus up to 118 objects placed with X, Y and Z metadata | Dolby Atmos uses a channel bed and objects to place brass band music precisely around the listener. |
| Sony 360 Reality Audio | Object-based, built on MPEG-H 3D Audio: every sound is an object on a sphere | Sony 360 Reality Audio places every brass band music element as an object on a sphere without a channel bed. |
| MPEG-H 3D Audio | Channels, objects and Higher Order Ambisonics in one stream, with optional listener control | MPEG-H 3D Audio allows listeners to adjust the level of specific brass band music objects if permitted. |
| Auro-3D | Channel-based: a height layer above 5.1 or 7.1, with an optional overhead channel | Auro-3D uses a channel-based height layer rather than objects to create the outdoor brass band music space. |
| Eclipsa Audio (IAMF) | Channel-based and scene-based (Ambisonics) audio elements; no objects | Eclipsa Audio uses IAMF which has no objects, so the brass band music mix renders to channels or Ambisonics. |
| Ambisonics | Scene-based: the whole sound field, decoded to any speaker layout or to headphones | Ambisonics stores the entire brass band music sound field as spherical harmonics to decode to any speaker layout. |
| ADM BWF | Open exchange file (ITU-R BS.2076 metadata in a BW64 file) for channels, objects and scenes | ADM BWF is the open metadata format used to deliver the final brass band music master to streaming services. |
Delivery checklist for a brass band music Dolby Atmos release
- Master file. ADM BWF at 48 kHz and 24-bit, with no more than 128 channels: a 10-channel 7.1.2 bed plus up to 118 objects.
- Loudness. Integrated loudness no higher than -18 LKFS and true peak no higher than -1 dBTP, measured to ITU-R BS.1770.
- Binaural metadata. Set Off, Near, Mid or Far for every bed and object. Masters with everything left on Off are rejected.
- Re-renders. Listen to the 5.1, stereo and binaural re-renders before delivery, because most people will hear one of them.
Check the binaural render on headphones to ensure the sousaphone and bass drum remain solid and centred.
How to make immersive brass band music from stereo
Spatial9 can create spatial audio from a stereo track in a few steps:
- Upload your stereo master or your stems.
- Spatial9's AI separates and places each part, from the trumpets and trombones to the drums and sousaphone.
- Preview it in binaural on headphones.
- Export Eclipsa Audio, ADM, binaural or Ambisonics.
- Publish a video. Create a YouTube-ready video with your immersive audio and publish it directly.
For related guides, read spatial audio for jazz, spatial audio for funk and spatial audio for regional Mexican music. Every guide is listed in spatial audio and immersive music by genre.
Frequently asked questions
Does this guide cover marching band, second line and Balkan brass?
Yes. Marching band music uses the full width, with sections spread across the front and sides, the drumline in front and an open outdoor ambience. Second line follows the main layout, with the sousaphone centred, the crowd behind and street echo around you. Balkan brass puts lead trumpets front left, tubas and the large drum centred, in a lively, tighter room.
Can I make a brass band mix in Dolby Atmos or Eclipsa Audio?
Yes, you can make a brass band music mix in Dolby Atmos. The format supports up to 118 objects alongside a 7.1.2 bed, giving you plenty of space for horns and drums. Remember that Dolby Atmos and Eclipsa Audio are separate deliveries, as Eclipsa uses IAMF and has no objects. Also, Apple Music applies its own spatial renderer, so its headphone result can differ from the Dolby binaural render and must be checked separately.
Should brass band music elements be beds or objects in Dolby Atmos?
In brass band music, the sousaphone, bass drum, crowd and street echo should be beds. Beds suit steady, wide or enveloping parts and the low-end foundation. The trumpets, trombones, saxophones and snare drum should be objects. Objects suit leads, solos and featured instruments that need precise placement. Using objects for the horns allows you to position them off the walls for depth, making the call and response clear.
Does a brass band music Dolby Atmos mix also work for Sony 360 Reality Audio and MPEG-H?
A Dolby Atmos mix for brass band music does not directly translate to Sony 360 Reality Audio or MPEG-H. Sony 360 Reality Audio is entirely object-based and built on MPEG-H 3D Audio, meaning it has no channel bed. You must rebuild the mix using only objects on a sphere. MPEG-H 3D Audio carries channels, objects and Ambisonics, and is used in broadcasting, requiring a separate authoring process to allow listener adjustments.
How is a brass band mix different from a jazz mix in spatial audio?
A jazz mix usually recreates a small group on a club stage. A brass band mix is louder and more outdoor, with sections spread wide and the crowd around the listener.
Where should the sousaphone go?
In the centre, at ear level. Its low notes hold the groove and are hard to locate anyway.
Should the band surround the listener?
Partly. The horn sections sit across the front and sides, while the crowd and street sound fill in behind. This feels like standing in the middle of a parade.
Can I convert a released brass band track to spatial audio?
Yes. Spatial9 uses AI to separate a stereo master into its parts and export an immersive mix as Eclipsa Audio, ADM, binaural or Ambisonics.
Does immersive brass band music work on normal headphones?
Yes. The mix is rendered binaurally, so the horns and drums play around you on any regular headphones.
Dolby and Dolby Atmos are trademarks of Dolby Laboratories. 360 Reality Audio, Auro-3D and other format names are trademarks of their respective owners. Spatial9 is not affiliated with or endorsed by Dolby Laboratories or these companies.
Sources
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- Universal Music Group. Content Guide: Dolby Atmos servicing asset specifications. contentguide.universalmusic.com. ADM BWF, 48 kHz, 24-bit, 128 channels, binaural metadata and -18 LKFS.
- International Telecommunication Union. Recommendation ITU-R BS.2076: Audio Definition Model.
- International Telecommunication Union. Recommendation ITU-R BS.2088: Long-form file format for the international exchange of audio programme materials with metadata (BW64).
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- Alliance for Open Media. Immersive Audio Model and Formats (IAMF). aomediacodec.github.io/iamf. Channel-based and scene-based audio elements.
- Zotter, F. and Frank, M. (2019). Ambisonics: A Practical 3D Audio Theory for Recording, Studio Production, Sound Reinforcement, and Virtual Reality. Springer.
Bring the parade to your listeners
Upload a brass band track to Spatial9 and hear every section march around you in minutes. Then export it or publish it straight to YouTube.