Black Sheep Boy Appendix is an EP by indie band Okkervil River released on November 22, 2005. This mini-album is a continuation of their 2005 release, Black Sheep Boy and is a compilation of unfinished and reworked songs from that album. The disc also includes "Another Radio Song," a re-recorded and lyrically altered version of "For the Captain," a song featured on the band's 1999 debut release, Stars Too Small to Use. "Black Sheep Boy #4" is a re-recorded and lyrically altered version of "Disfigured Cowboy," originally released on the Comes With a Smile issue #11 CD sampler, and was played on an episode ("One Night") of Cold Case.
The definitive double-disc CD version contains a video for "No Key No Plan," directed by Will Sheff. The music is an alternate ballad version of the original take featured on the EP itself. This dreamy version features an uncredited Toby Dammit playing an assortment of orchestral and electronic instruments, such as vibraphone and glockenspiel with an electronically treated omnichord and piano together with Will Sheff on acoustic guitar and vocals. It was recorded and mixed in Berlin in 2005 at Toby Dammit's studio Dammit Centrale. Toby Dammit's psychedelic take on the song is a serious musical bend in direction from other Okkervil River output, but in combination with Will Sheff's homemade super-8 footage from Okkervil River's 2005 European tour, the result is absolutely fascinating and well worth finding for any O-R fan.