Complex sentence: In August 1968, three months after Buffalo Springfield dissolved, Young jammed with the Rockets on stage during their show at the Whisky a Go Go and soon after enlisted Whitten, Talbot, and Molina to back him on his second solo album.
Split into simpler sentences: In August 1968, three months after Buffalo Springfield dissolved, Young jammed with The Rockets on stage during their show at the Whisky a Go Go. Shortly thereafter, he enlisted Whitten, Talbot, and Molina to back him on his second solo album.