The J.B.'s were formed in March 1970 after most of the members of Brown's previous band walked out on him over a pay dispute. (Brown's previous bands of the 1950s and 1960s had been known as The James Brown Band and The James Brown Orchestra.) The J.B.'s initial lineup included bassist William "Bootsy" Collins and his brother, guitarist Phelps "Catfish" Collins, formerly of the obscure funk band The Pacemakers; Bobby Byrd (founder of the original Famous Flames singing group) (organ), and John "Jabo" Starks (drums), both holdovers from Brown's 1960s band; three inexperienced horn players, Clayton "Chicken" Gunnells, Darryl "Hasaan" Jamison, and Robert McCollough; and conga player Johnny Griggs. This version of the J.B.'s played on some of Brown's most intense funk recordings, including "Get Up (I Feel Like Being a) Sex Machine", "Super Bad", "Soul Power", and "Talkin' Loud and Sayin' Nothing". They also accompanied Brown on a European tour (during which they recorded the long-delayed live album Love Power Peace), performed on the Sex Machine double LP, and released two instrumental singles, the much-sampled "The Grunt" and "These Are the J.B.'s".