I don't understand the question. If I were to transform into any musician, I might choose somebody like Miles Davis or Janelle Monae, or perhaps Enya. Transforming into a musician solely for the duration of one play of a single song just sounds like a recipe for frustration.
"Oh, I'm Miles Davis. Ow, my ears! What is that racket? Oh wait, maybe we could tweak the bass line and have the drums come in late, wait a minute where's my trumpet? This could be good! Oh, too late, now I'm not Miles Davis any more. What rotten luck. Abba should have written longer songs "