Michael B. Tretow

Bo Michael Tretow (born 20 August 1944 in Norrköping) is a Swedish record producer and audio engineer, musician and composer, best known for his work with the Swedish pop group ABBA (1970–1982), and with the musical Chess. He has also composed several themes and jingles for Swedish national radio and television.

Tretow began working at Metronome Studios in Stockholm in 1967, and later worked at GL… More