He then signed to Ace after label head Johnny Vincent caught his drag show, offering Marchan a contract in the mistaken belief he was a woman; 1955's "Give a Helping Hand" appeared under the alias Bobby Fields, with the Marchan surname restored for his next effort, the regional smash "Chickee Wah-Wah." In 1957 he joined Huey "Piano" Smith as the original lead vocalist with Smith's legendary band the Clowns -- in addition to appearing on classics including "Rockin' Pneumonia and the Boogie-Woogie Flu," "Don't You Just Know It," "You Don't Know Yockomo," and "Havin' a Good Time" (not to mention popularizing the Smith composition "Sea Cruise," a hit on wax for singer Frankie Ford), Marchan also continued his solo career, issuing "I'll Never Let You Go." He left the Clowns in early 1959, issuing his final Ace single, "Rockin' Behind the Iron Curtain," later that same year. He then returned to the road and resumed his drag career, signing to Fire Records to issue "Snoopin' and Accusin'."

With 1960's reading of the Big Jay McNeely song "There Is Something on Your Mind," Marchan finally scored the solo hit that had for so long eluded him, reaching number one on the R&B charts. A series of Fire singles followed in rapid succession, among them "Booty Green," "All in My Mind," "What You Don't Know Won't Hurt You," and "Yes, It's Written All Over Your Face," but none earned much attention on the national charts. On the recommendation of Otis Redding he was signed to Stax Records in 1963, adopting a more contemporary soul approach and making his label debut with "What Can I Do." Within a year Marchan was recording for yet another label, Dial, cutting "Get Down With It," a hit for British glam icons Slade in 1971. He spent much of the mid-'60s recording for Cameo, debuting in 1966 with "There's Something About You, Baby" and returning to the R&B Top 20 with the follow-up, "Shake Your Tambourine."

Subsequent efforts, including 1967's "Meet Me in Church" and "You Better Hold On," received scant attention, however, and after 1968's "(Ain't No Reason) For Girls to Be Lonely" -- a one-shot for Gamble -- Marchan spent nearly a decade without a record deal, returning to his drag roots yet again. By 1977 he was installed as the MC at New Orleans' Club Alhambra, resurfacing that same year on Mercury with "I Wanna Bump With the Big Fat Woman," soon followed by another novelty effort, "Disco Rabbit." Around 1983 Marchan founded his own production company, Manicure, to scout and promote up-and-coming hip-hop acts. In 1987 he recorded his final single, an updated version of "There Is Something on Your Mind," and later helped found the Cash Money label. After a long battle with liver cancer, he died December 5, 1999, at the age of 69.