Michael Tn Vesterbro with his mother, Doris, who died April 2010 at the age of 80, and two brothers, Dennis and Kim. Trempenau started his musical career singing in Vesterbro Ungdomsgård, a youth group club in Copenhagen, and appears on their first album: "Vi lever på Vesterbro" (1974). In 1976, Trempenau, now known professionally as Tramp, joined the pop band Mabel as the lead singer. Mabel released five studio albums and were very popular in Denmark and Spain, with Mike receiving "teen idol" status. In 1978, Mabel won the Danish Song Contest with the song "Boom Boom" and represented Denmark in the Eurovision Song Contest 1978 that same year. Later, Mabel moved to Spain and became Studs, releasing a debut self-titled album in 1981 and then moved to New York City and became Danish Lions in 1982. After recording demos, the band returned home to Denmark, however, Tramp decided to remain in America.