Wadenius was born in
Stockholm,
Sweden, where he attended
Adolf Fredrik's Music School. After appearing on a number of Swedish hit records and being founder-member of two Swedish
supergroups of the early 1970s,
Made in Sweden (1966–1972 and 1976) and (1971–1972), he relocated to the United States to become lead guitarist of the US group
Blood, Sweat & Tears from 1972 to 1975. In 1979, he joined The
Saturday Night Live Band on television. He stayed on until 1985 and has since worked for many important artists as a session player and/or touring musician, among them
Steely Dan,
Aretha Franklin,
Diana Ross,
Dr. John,
David Sanborn,
James Brown,
Marianne Faithfull,
Paul Simon,
Joe Thomas,
Dionne Warwick,
Roberta Flack,
Donald Fagen,
Doug Katsaros,
Michael Franks, and
Luther Vandross, as well as many important artists in Sweden. In 1970, he received a Swedish
Grammis for Made in Sweden and another for his work on children's songs. Later in his career, he produced other Scandinavian performers, including
Anne Sofie von Otter, and in 2001 he set up a recording studio in Oslo, Norway. == Discography ==