Rosenbaum, Alexander Yakovleivich. Born on 13 September, 1950 in Leningrad. Graduated from the Pavlov First Leningrad Medical School in 1974. For four years worked as an emergency vehicle doctor. In 1980 he began his musical career. Rosenbaum played with various groups, from 1983 he has made solo performances. Rosenbaum is also the director at the theater-studio "The Alexander Rosenbaum Studio of Fine Arts". He finished a piano course in musical school and a choreography course at a musical institute. Rosenbaum began writing songs in 1968 during his years at the institue. These songs were mostly written for student plays, vocal-instrumental ensembles and rock groups; some of the songs were released on disks and albums. For a period of time, Rosenbaum had performed under the pseudonym of Ayarov.