The New Rascals
From The Young Rascals Wikipedia entry:
The Rascals were an American blue-eyed soul and rock music group of the 1960s. When Atlantic Records signed them, they discovered, to their own dismay, that they already had another obscure group named the Rascals on the payroll. They decided to rename the group the Young Rascals. Felix Cavaliere (keyboard, vocals), Gene Cornish (guitar), Dino Danelli (drums) and Eddie Brigati (vocals) formed the band in New York City. Three-quarters of the group - Felix, Gene, and Eddie - had previously been members of Joey Dee and the Starliters. Eddie's brother, David Brigati, another former Starliter, arranged the vocal harmonies and sang backgrounds on many of the group's recordings, informally earning the designation as the Fifth Rascal.
Their first minor hit was "I Ain't Gonna Eat Out My Heart Anymore" (1965), followed by the #1 single "Good Lovin'" (1966, originally by the Olympics). Soon, the band began to mature as songwriters and released other hit songs written themselves, including "Groovin'" (recorded in 1967, it's one of their best-known hits), "It's Wonderful", "How Can I Be Sure" (which got to Number 1 in the UK when covered by David Cassidy) and "A Beautiful Morning" (1968).
Their best-remembered song was "People Got to Be Free" (1968), a passionate plea for racial tolerance. Unusual for their time, the Rascals refused to tour on segregrated bills.
In 1997, The Young Rascals were inducted into the Rock and Roll Hall of Fame.