Musical Lightweight

Humans incapable of being able to listen to entire song. Usually getting bored with a every song by the time it gets to half way and moving to the next song.

Isaac: hey Lachlan why did you change the song?
Lachlan: I didn't like it, I was getting bored
Isaac: Gee man, your such a musical lightweight

Samara keeps changing the song, she's such a musical lightweight.