Listening notes
Records of songs, mixes, and production details that stand out.
Audio
Less deterministic signals.
Music sketches, sound design notes, listening-room experiments, and the occasional track that makes the emotional gain stage clip.
Studio experiments
Small tests with synths, samples, piano lines, vocal texture, and arrangement.
System tuning
Room behavior, DSP, speakers, sub-bass, and how the playback chain changes the experience.