Talent or Work?

Talent is only part of the story. You hear a new friend sing and play the guitar like Eric Clapton. Afterwards you say… 

"Hey man, that was incredible… You are so talented.”

You might mean well but that comment is likely not music to his ears. "Talent" suggests that the music came naturally… Or that he was born with it… like he didn't have to do a thing to sound like that.

Perhaps admiring the WORK would feel better. 

"Hey man, that was incredible… I can tell you've worked long and hard on your craft. Thanks for playing.” 

….my guess is he will be more eager to play for you again.