6. The guitar bus: gluing the wall
Group all the guitars into a bus and glue them with 'glue' compression, EQ and a touch of shared character.
The last step makes your 2, 4 or 6 guitar tracks stop sounding like separate tracks and sound like a single wall. The trick is the guitar bus (a group): you send all the guitars to the same channel and process them together. That way they move as one body, share color and you control them with a single fader.
Build the bus
In Studio One, select all the rhythm/layer tracks and route their output to a Bus (group) “GUITARS”. That bus goes to the mix’s main bus.
“Glue” compression
A gentle, slow compression on the bus makes the guitars “breathe together”: the peaks of one and the other even out and the ensemble feels cohesive, like a single instrument. Don’t aim to crush: aim to glue.
Lowering it = more compression, more 'glued' but less dynamics. For glue you want just 1–3 dB of reduction on the peaks: enough for them to move together, not to crush them.
How much it compresses once past the threshold. For glue, low ratios (2:1) sound natural; high ratios start to squeeze and take life out of the wall.
A not-too-fast attack lets the pick attack (the transient) through before compressing → the guitar keeps its bite. Too fast = it kills the attack and sounds dull.
It should release in time for the next hit. Too short = audible pumping; too long = it stays compressing too much. Set it by listening to the riff's groove.
Try the compression with a gain-reduction meter
Load your guitar bus (or the test riff) and play with threshold, ratio, attack and release while watching the gain-reduction meter and the dynamics visualizer. Aim for those 1–3 dB that glue without crushing; use the A/B to compare with and without compression at the same volume.
Playground · Compressor
- •▶ Play — plays the audio in a loop.
- •No compression / With compression — switch between the sound with and without compression to compare, at the same volume. The segment with the lit border is the one you're hearing (“A/B” comparison).
🎧 Audio to processChoose which sound goes through the effect:
See how the output line (orange) stays more even than the input line (gray): the compressor brings loud and soft closer together. The more you compress, the flatter it gets.
The compressor evens out the volume (it lowers the loudest parts). Move each control and watch the GR bar above:
A recipe to hear it clearly: source 🎸 Bass, ratio 4:1, and lower the threshold until you see 3–6 dB on the GR bar. Turning the compression on and off you'll notice the bass gets more even and “glued”.
The bus is what turns loose tracks into 'one wall' and gives you simple control over the whole guitar. It's best built early in the mix because it changes how it sounds and how you balance everything else.
Bus character and EQ (optional)
A shared color for the whole wall
A touch of console saturation on the bus (see section 4) gives all the guitars a shared color and glues them even more, with a single pass of harmonics instead of dirtying track by track. And a gentle HPF/EQ on the bus cleans the whole in one go.
Common mistakes
Guitar bus for the glue demoPending — this one is on you
Ideal: a submix of your guitars (doubled rhythms already panned, mixed to a stereo file) from the
guide song, in prodmus_frontend/public/audio/guitarra/, WAV 24/48. With that I’ll
show an A/B with and without glue compression so you can hear the wall cohere.
Quick path — glue the wall
Quick path
- Route all rhythms/layers to a 'GUITARS' bus.
- Insert a compressor: ratio 2:1, medium-slow attack, release that breathes.
- Lower the threshold to 1–3 dB of reduction on the peaks (no more).
- A/B at equal volume: the guitars should sound more 'together', not crushed.
- Optional: a touch of saturation/EQ on the bus for a shared color.
- Control the whole wall with the bus fader.
Expected result
Expected result
All the guitars sounding like a single cohesive wall, controllable with one fader, with 1–3 dB of glue moving them together without crushing them and (if you used it) a shared color. With this you close the guitar mix: clean signal, with room for the vocal, with character, placed in the stereo and glued. The next big step is integrating it with the rest of the song and, later on, the master.