Rosselló was a member of Menudo from 1983 to 1987. He substituted Miguel Cancel and debuted in the album A Todo Rock. Rosselló didn't get to do a lot of lead singing for Menudo. Most of the time, he sang backing. During his time, Menudo reached great popularity in Asia, more specifically in the Philippines and Japan. They had hits like Indianapolis and Like A Cannonball, which was featured on Cannonball Run 2.
Not much has been known from Rosselló since he left Menudo. He is reportedly living in Brazil and did not join his former bandmates at the El Rencuentro tour.