After leaving school, Mark resumed her musical career working with Trojan Records house producer and A&R manager Clement Bushay, and songwriter/arranger Joseph "Tunga" Charles (of Zabandis), releasing "Keep it Like It Is". She stayed with Bushay for further releases on his own Bushays label including her rendition of Michael Jackson's "Even Though You're Gone", "Six Sixth Street", and her début album "Breakout" (1981). She was unhappy with the album, feeling that it had been released before it had been properly finished, and did not record again for over a year. Mark returned to the studio in 1982, recording "Mum and Dad" (arranged by Sly & Robbie).