For the second straight holiday season, The Beach Boys have released a rarities collection. Keep an Eye on Summer, with tracks recorded in 1964, is currently an iTunes exclusive.

It’s a compilation of alternate and stereo mixes, a cappella vocals and occasional studio chatter — when one of the guys missed a note, Brian Wilson was not shy about letting them know. It also includes concert recordings and rarities, such as a cover of rival Jan & Dean‘s “Little Old Lady From Pasadena.”