 Transistorized electronic drum machines later appeared in the 1960s.The Ace Tone Rhythm Ace, created by Ikutaro Kakehashi, began appearing in popular music from the late 1960s, followed by drum machines from Korg and Ikutaro's later Roland Corporation also appearing in popular music from the early 1970s.Sly and the Family Stone's 1971 album "There's a Riot Goin' On" helped to popularize the sound of early drum machines, along with Timmy Thomas' 1972 R&B hit "Why Can't We Live Together" and George McCrae's 1974 disco hit "Rock Your Baby" which used early Roland rhythm machines.