But if you watch the concert you see that the lineup often changes. Track #1 is a solo performance by Bugge playing all instruments and electronics, track #4 is a duet with Dhafer Youssef (vocals, no instrument) and Bugge on piano. Dhafer Youssef only joins the stage for tracks #4 to #6. Track #7 is a trio performance. For some tracks the bassist replaces its double bass by electric bass guitar.
Should or could I enter the actual relationships per track? Any advice welcome.
If it’s clear who’s actually performing what, then I agree with @IvanDobsky. If any of the artists are like P.D.Q. Bach - MusicBrainz (who uses wordplay in instrument names) or I Solisti di zirnachron - MusicBrainz (who uses a fictional instrument), I’d be more careful to preserve artist intent. Same if any of the artists are known to play tricks on the audience, like pretending to play one instrument on-stage while someone off-stage is playing a completely different instrument.