CodaKeysBETA

A song made in CodaKeys

Afterglow

104 BPMA minor4/42:48

Listen

See it. Hear it.

From a few bars to a conversation.

Select the chorus. Ask Claude.
Hear the change with the band.

Inside AfterglowREAL EDIT / 0:50

Screen recording of the developer build on Afterglow: three requests typed into the real Claude panel, three real edits, then playback. Claude’s thinking time is shortened in the edit; nothing else is.

Read the walkthrough
  1. Chorus 1 is selected on the Sung Vocals track and attached with Ask Claude.
  2. The request is typed into the Claude panel: lower both pads by 2 dB under this chorus so the voice sits on top, and say why in one line.
  3. Claude lowers both pads by 2 dB through the chorus with volume automation, and explains that the vocal and the pad share the same mids.
  4. Verse 2 is selected on Keys: add a simple counter-line that answers the vocal, in the song's key.
  5. Claude writes a twelve-note bell line in the gaps where the voice breathes, on a new Counter track.
  6. The Bridge is selected on Drums: thin the drums to kick and a soft hat, and bring the full kit back for the final chorus.
  7. The Bridge was already kick-only, so Claude adds soft hats that build into the final chorus and leaves the final chorus untouched.
  8. Playback from the final chorus with the three changes in place. The requests are typed into the panel by the recording script; the replies and the edits are Claude's. Thinking time between a request and its reply is shortened in the edit.

How it was made

  1. The brief

    Elliot Bostick set the theme, the drive home after the night that changed things, and the sound: synthwave, about three minutes, with a sung vocal.

  2. The band

    An Opus 5.5 agent wrote every part as MIDI in CodaKeys, in about two hours. It worked through the app’s own tools, the same catalogue the Claude panel uses, and followed CodaKeys’ skill files as its instructions.

  3. Lyrics and melody

    A second Opus 5.5 agent wrote the melody and the lyrics, the chorus first.

  4. The voice

    Eleven Music sang a chorus test, then the whole song over the band. Each charge waited on the app’s spend card until Elliot approved it: about $0.14 for the chorus, about $1.25 for the song.

  5. Mix, master and exports

    The Claude panel inside CodaKeys mixed, mastered and exported the song, running Opus 5.5 on Elliot’s own Claude account while Elliot watched. A script typed the requests into the panel.

  6. The film

    The recording script typed three requests into the panel. The replies and the edits are Claude’s.

Numbers

bars
72
stems
9
LUFS integrated
−14.8
dBTP true peak
−1.0
on the two vocal spend cards
$1.39

Credits

Written and produced by
Elliot Bostick with Claude
Vocal
Eleven Music (ElevenLabs)
Drums
CodaKeys Drum Player
Bass, pads, arp, keys, lead, riser
Surge XT
Reverbs and echo
CodaKeys’ Hall Reverb, Reverb and Delay

Stems

Nine 24-bit WAV stems, unmastered, all starting at bar 1. The instrument stems are Elliot Bostick’s. The vocal stem is a generated asset licensed to Elliot Bostick by ElevenLabs, not to you, so keep it out of anything you publish or release.