Derek and the Dominos

Derek and the Dominos were a blues rock band formed in the spring of 1970 by guitarist and singer Eric Clapton with keyboardist Bobby Whitlock, bassist Carl Radle and drummer Jim Gordon, who had all played with Clapton in Delaney, Bonnie & Friends. Duane Allman was also invited by Clapton to join the sessions to add slide guitar to a number of tracks. Allman was then asked to join permanently, but declined.

source: Wikipedia