LOS ANGELES — Chuck Negron, a founding member of Three Dog Night whose lead vocals powered a string of hits including ''Joy to the World," ''One'' and ''An Old Fashioned Love Song'' for one of the top rock acts of the late 1960s and early '70s, died Monday. He was 83.
He died of complications from heart failure and chronic obstructive pulmonary disease at his home in the Studio City neighborhood of Los Angeles, according to his publicist Zach Farnum.
Negron also sang lead on ''Easy To Be Hard'' and ''The Show Must Go On.'' The band's other hits include ''Black and White," ''Mama Told Me (Not to Come),'' ''Never Been to Spain" and ''Shambala.''
In December 1972, the band hosted and performed on the inaugural edition of Dick Clark's ''New Year's Rockin' Eve.''
By 1975, album sales had declined and the band had its last Billboard Hot 100 hit with ''Til the World Ends.'' Internal strife fractured the group and it fell apart the next year.
In 1981, the group reunited, but Negron was dismissed in late 1985 because of recurring drug issues.
In 1967, Negron joined Danny Hutton and Cory Wells to form Three Dog Night, a vocal trio with roots in R&B, rock ‘n' roll, and urban doo wop. They found success two years later with their first million-selling single ''One,'' written by Harry Nilsson.
Negron engaged in heavy drug use during the band's quick ascension to the top of the charts. He spent his fortune on drugs and even ended up on Los Angeles' Skid Row for a time.