Comparative advantage in music

From an interview with Gene and Paul of Kiss on their sharing the stage with Joe and Steve of Aerosmith:

“No one does what [Aerosmith does] better. And we tend to think that there’s nobody that does what we do better. Neither I nor Paul nor anybody in the band is going to run around, trying to do what [Aerosmith vocalist] Steven [Tyler] does. Likewise, nobody in that band is going to try to jump up in the air the way Paul does or stick out their tongue.”