Moving from a song ending into speech

[Olivervut]

I am checking a backing track for an upcoming rehearsal. A few passages become harsh in the room, while headphones make the problem harder to identify. I would like to check the playback setup before editing the recording. We can move the speaker and compare the same section at different levels. How would you arrange those checks to keep the comparison useful? I found some related reading under suno fix in this context. That gives me a starting point for questions, but it cannot diagnose our room. If the roughness follows the file, I would keep the original and test only a short copy. I will use the same excerpt for every comparison, write down the playback level, and ask another person to listen before we make any decision about changing the source recording. The useful result would be reliable playback that preserves the timing cues for everyone.