 For most shows, save for his solo numbers, Williams danced and lip-synced on stage to parts sung live by Street into an offstage mic behind a curtain.At other shows, and during most of the second half of 1970, Street substituted for Williams on stage when he was too sick to go on.Eddie Kendricks became detached from the group after David Ruffin's firing and as the health of Paul Williams continued to fail.