Space Cadet Solo Flight was credited only to group lead vocalist KC . Featuring more of a pop sound than the previous albums,[citation needed ] it was not successful as the album and none of the singles released charted in the US. The album is notable for including a cover of the Supremes ' 1966 hit song "You Keep Me Hangin' On ".
Side two Title Writer(s) 6. "I Don't Wanna Make Love" Marc Gabriele, Madeline Stone , Norman Dolph 3:55 7. "Nothing Sadder Than a Heartache" Gabriele, Stone 3:24 8. "What's Wrong?" Gabriele, Stone, Dolph 2:54 9. "Only Love" Gabriele, Stone, Dolph 3:25 10. "Holdin' on So Long" Eddie Sierra, Jim Morgan, Dolph 2:58
Harry Wayne Casey – vocals, keyboards, horn arrangements
Lawrence Dermer – keyboards
Paul Harris – keyboards
Ernest Stewart – keyboards
Timmy Thomas – keyboards
Slick Aguilar – guitars
Tony Battaglia – guitars
Mark Gabriele – guitars
Tommy Johnson – guitars
Ishmael Ledesma – guitars
Richard Finch – bass guitar, drums, percussion, string arrangements
Emmanuel Taylor – bass guitar
Joe Galdo – drums
Robert Johnson – drums
Omar Martinez – drums
Mark Novotak – drums
Fermin Goytisolo – percussion
Whit Sidener – baritone saxophone
Mike Lewis – tenor saxophone, horn arrangements, string arrangements
Ken Faulk – trumpet
Brett Murphy – trumpet
Jerry Peel – French horn solo (5)
Deborah Carter – backing vocals
Beverly Champion – backing vocals
Denise King – backing vocals
Harry Wayne Casey – producer
Richard Finch – producer, engineer
Milan Bogdan – engineer, mixing
Rob Vaughn – art direction
David Vance – photography