 Onstage, this change was reflected in the group's use of a custom-made four-headed microphone stand, invented by David Ruffin.When Ruffin was replaced by Dennis Edwards, and Sly and the Family Stone became popular, Whitfield again restructured the Temptations' sound, this time driving the group almost completely into a "psychedelic soul"-type sound.However, ballads in the traditional style of the group were still being recorded as B-sides and album fillers, with the lone exception being "Just My Imagination".