A studio recording and a live recording are different documents of different events — confusing them produces confused listening.
Two Objects, Not Two Versions
A studio recording is a construction. Singers perform in short takes, sometimes a phrase at a time; the conductor may re-record an orchestral passage months after the vocal sessions; the final sound is assembled in an editing suite. What you hear has never existed in real time, in that room, in that sequence. It is the best achievable version of the work, engineered toward an ideal.
A live recording is a document. It captures a specific performance on a specific night, with whatever went right and whatever went wrong — a wavering high note, a prompt-box creak, an audience cough at the worst possible bar. Nothing has been assembled; the sequence is the sequence; the singers were tired or inspired or both. What you hear actually happened.
This distinction matters because the two objects answer different questions. A studio recording answers: what does this opera sound like when every decision has been optimised? A live recording answers: what did this performance feel like when the stakes were real?