mastering notes
Write what changed, then ask why.
Mastering is not a magic label attached to a favorite edition. It is a set of decisions about level, tonal balance, sequencing, noise, restoration, and translation across playback systems. Rawdisc notes begin with audible facts and visible credits, then hold back from certainty unless the evidence supports it.
A good comparison does not need expensive language. It might say that the vocal sits forward, the cymbals feel grainier at higher levels, the bass is rounder but less defined, or the quieter passage breathes more naturally. The point is not to crown a winner. The point is to preserve a useful observation that can be tested later.

Compare at matched playback level before deciding that one edition is more detailed.
Mention the source clue, but do not assume a matrix mark explains every audible difference.
Listen through a full side or full movement; short clips often exaggerate treble and level differences.
Keep room, cartridge, DAC, and headphone notes close to the verdict so the note remains portable.