Pickin' On Series - American Idiot (Green Day)
I’m normally first in line to criticize series like this, which tend to just take the chords to a song and play them on a different instrument (banjo, accordion, distortion guitar, whatever). For this song at least, these anonymous session musicians sound like they tried for more than a paycheck, with a harmonies, solos, etc. And, unusual for the genre, it’s not instrumental – a big plus.

http://covermesongs.blogspot.com/

Sounds good for bluegrass...