You remember the song, the room and perhaps the person who recommended it. The file is called track07-final-new. A few small notes would have made this a much shorter search.
You do not need a museum catalogue to organise a personal music collection. Start with the information you actually use when looking for a recording, then leave space for what you have not established.
Separate a name from a description
A filename helps identify an item in a folder. Metadata can describe it inside an audio file. Artist, track title and year are familiar examples. The Audacity metadata documentation explains how descriptive tags can be included in exported audio, while also noting that support varies by format and player.
That variation matters when moving a collection. Seeing a field in one application does not guarantee that another application will display it. Test one file in the player you intend to use before reorganising hundreds. This is a workflow suggestion; it does not require Audacity or any particular music library.
Use a small, repeatable record
For a starting catalogue, try title, performer, release or source, version, and one personal note. A spreadsheet or a plain text document can be enough. Put information from the release in one field and your own reaction in another.
Illustrative note: “Evening rehearsal, date unknown; filename supplied by the sender. Quiet introduction, then a second voice enters.” This describes the available evidence without inventing a performer or a recording date.
Do not turn a guess into a precise year just because an empty field looks untidy. “Unknown” is useful information. If you later confirm a detail, record where it came from so the next revision does not become another guessing exercise.
Distinguish the version you heard
A live performance, alternate take or different mix may share the same song title. Add enough detail to tell them apart. If mono and stereo labels are relevant, our channel guide explains why those labels are descriptive rather than a score for quality.
Make the system easy to maintain
Try the format on ten recordings. Search for them a few days later without relying on memory. Add only the fields that would have helped. A modest catalogue you keep using is more helpful than an elaborate one abandoned after the first album.