The Nuchez were a relatively short-lived band signed to Illinois-based Rembrandt Records label in 1966. The band was known locally for having been the opening act for Paul Revere & the Raiders and other major national acts playing Chicago, and built a great reputation in the process. Rembrandt co-founder Reggie Weiss signed them up as soon as he found out they weren't under contract to anyone; they were only the second group on the label after the Nite Owls.
The band, led by guitarist Ricky Erickson, cut their single "Open Up Your Mind" at Chess Records on South Michigan Ave. one day in August of 1966, along with the rest of the Rembrandt roster, and it was released first as the label's best prospect. "Open Up Your Mind" b/w "B.G.'s One Eye" was well reviewed in Cashbox, and it got airplay locally but never moved nationally, mostly owing to Rembrandt's lack of distribution beyond the local level. The A-side's main virtue was Ricky Erickson's hot lead guitar, a psychedelic workout built on surf guitar riffs, while the B-side was a more generic instrumental track. The Nuchez broke up in the spring of 1967 when Erickson exited to join the Lemon Drops, after sitting in with the latter group on their first recording session, for "I Live in the Springtime."