"(What Did I Do To Be So) Black And Blue?" was written, but not recorded, by Fat Waller for Edith Wilson to record in the 1929 musical Hot Chocolates. Blues singer Ethel Waters recorded a version a year later. In addition to these two versions, this week's mix features two versions by Louis Armstrong: an early version with his orchestra during the famous Hot 5 & 7 recordings and another recorded decades later.
"Moment Of Clarity" appears on Jay-Z's Black album. This week's mix features Dangermouse's mash up of this with "Happiness Is A Warm Gun" by The Beatles as well as other versions mixed with "Optimistic" by Radiohead and "Do, Me Baby" by Prince. These songs also appear here separately.
A previous mix featured Elton John's cover of John Lennon's "One Day (At A Time)". This week features the original as well as a demo version.
The rest: the sly John Lennon-written "Happiness Is A Warm Gun" from The White Album by The Beatles, the funky "Get No Lovin' Tonight" by Milton Wright, the sweet "How 'Bout Us" by Champaign and the adventurous "Space Is The Place" by Sun Ra.