Granted, you could be.
Granted, your skill level doesn’t change, everyone else in the world just becomes a worse guitar player than you
I know these are all fun writing prompts but this feels like the right answer.
Granted, you’re the best player on Wonderwall. Any other song you play sounds like garbage.
Granted, you can pluck out Twinkle, Twinkle, Little Star on your guitar now. Everyone else in the world no longer has any interest in music. No instruments are played, and you are considered an anomaly to be shunned.
Granted. You are now Jerry Garcia, and you died in 1995.
Same joke but with Jimmy Hendrix
Granted: Everyone who knows even slightly more about guitar than you, dies.
Granted, everyone in the world dies from an unknown disease and you’re the only person alive.