With his uncle, Bruno Glenmark and sister Karin, performed as "Glenmarks".  This uncle also owned Glen Studios, where ABBA recorded in the mid-70s, before Polar Studios was built.

His ABB&F related debut may have been on Frida Ensam, where he played guitar on Skulle de' va' skönt and Ett liv i solen. This album was, of course, produced by Benny.

He probably played on Michael B. Tretow's 1976 album, "Let's Boogie." Tretow was ABBA's studio engineer. B & B are believed to have played, and A & F to have contributed vocals, to this album. This album is about to be released.

Featured on electric guitar on ABBA's Money, Money, Money (1976).

His own recordings during the 1970's did not take off.  A collection of "greatest hits" from this era is nonetheless available, entitled "1975-1981", with the following tracks:
 
                    1.  Djupa vatten
                    2.  Kom i natt
                    3.  Elisa
                    4.  Nu bubblar blodet så hett
                    5.  Rock it in my pocket
                    6.  Express
                    7.  (i keep finding) traces
                    8.  Jag känner igen dej
                    9.  Baby, baby, baby
                    10. The velvet rush
                    11. This is goodbye
                    12. Number one love
                    13.  Om jag visste vad jag ville
                    14.  Maggie
                    15. Det är mitt liv - det är jag
                    16. Jag har nåt att ge