The song was written and sung by guitarist Dickey Betts, who penned it about his girlfriend (and later wife), Sandy "Bluesky" Wabegijig.
His debut as a vocalist for the band, Dickey Betts composed "Blue Sky" about his Indigenous Canadian girlfriend, Sandy "Bluesky" Wabegijig, whom he would later marry.
[5] While Duane Allman died before Eat a Peach's release, the band played the song live several times before and after the album's studio version was recorded.
Two versions of "Blue Sky" were being performed as of 2012: An Allman Brothers take on the SUNY Stony Brook/Eat a Peach original (with Warren Haynes on lead vocals, though Gregg Allman does them sometimes), and an arrangement which evolved between 1973 and 2001 played by Dickey Betts and his band Great Southern.
"Blue Sky" has been covered several times in the past including by Joan Baez on her 1975 album Diamonds & Rust, also released as a single.