Ulf Andersson was one of the most sought after saxophone players in Stockholm in the 1970s, and Björn Ulvaeus and Benny Andersson and their sound engineer Michael Tretow immediately thought of him when they needed a groovy musician. The most famous of Ulfa Andersson saxophone features probably remains the recording of” I do, I do, I do”. He is still one of the most wanted saxophone players in Europe and has performed with Monica Zetterlund, Tchad Jones, Frank Sinatra Jr, Georgie Fame, Rich Matteson, Larry Willis, Lars Samuelson Big Band and others. Ulf Andersson also participated in the ABBA world tours and has appeared on thousands of recordings.