Comment Re: For those that don't know (Score 4, Informative) 19
Percussive sounds have always been a strong point for Opus relative to other codecs, avoiding problems with pre-echo etc, while sparse pure tones, as in e.g. glockenspiel solos, were something Xiph had to work at doing better with.
Part of that is simply due to the nature of the short-time Fourier transform. Since it was designed first as a VOIP codec, prioritizing low latency, Opus uses short transform windows, while most other music-capable codecs use long ones. This results in Opus having naturally better temporal resolution, while other codecs have naturally better frequency resolution. That's a Gabor limit/ Uncertainty Principle type of deal. Opus includes extra tricks to improve its performance on tonal content, and some of that includes boosting VBR bitrate; other codecs take corresponding measures to try to improve their performance on transients.
So while it may be worth encoding whatever cymbal-heavy tracks you have in mind and doing a blind listening test, I think it's likely the cymbals have been encoded pretty well even by pre-1.0 versions of Opus, which are now over twelve years old.