Drummer Isaac "Red" Holt and bassist Eldee Young, formerly members of Ramsey Lewis' jazz trio, formed a new outfit called the Young-Holt Trio with pianist Don Walker in 1966. They met with modest success, including the minor hit with "Wack-Wack", which charted at number 40 on the Billboard Hot 100.
In 1968, the group renamed itself Young-Holt Unlimited, and replaced Walker with Ken Chaney. Under their new name, the group scored a number three Hot 100 hit with "Soulful Strut," the backing instrumental track from Barbara Acklin's "Am I the Same Girl." "Soulful Strut" sold a million copies with the gold record awarded by the RIAA in January 1969, less than 3 months after the track's release. Follow-up releases failed to match the commercial success of "Soulful Strut", and the group disbanded by 1974, with Young and Holt continuing to play in Chicago small bands.
Young died of a heart attack on February 12, 2007, in Bangkok, Thailand, at the age of 71.