“Lovely bit near the end” preserves enthusiasm but not a location. If you want to revisit a detail, add enough information to find it without replaying the entire album and hoping recognition arrives.
Name the recording first
Include the track and the edition or file you used. A timestamp from one performance may point somewhere quite different in another. If your player displays elapsed time within a track, say that rather than using an ambiguous number.
For a hypothetical note, write “Track three, around 2:10 elapsed: the lower voice becomes easier to follow.” The location is approximate and the observation is yours.
Describe the event on either side
Add a nearby cue, such as a vocal return or a sudden reduction in texture. This helps when a different player counts time slightly differently or when you are using a physical format without a precise display.
Avoid pretending the timestamp identifies the cause of a sound. It tells you where to listen; interpretation still requires care.
Test one old note
Come back after a few days and try to find the passage. Revise any wording that only made sense while the track was playing. Pair timestamps with specific descriptions of recorded sound. A small note earns its place when it lets future you hear the same detail again.