Swedish guitarist, born 6 May 1934 in Högalid parish, Stockholm, died 23 January 2007 in Stockholm.
He played together with such diverse artists and groups, as Rock-Boris, Telefon Paisa, Christer Boustedt, Bernt Rosengren, Emil Iwring, Svenssons Peace, Nannie Porres and Kebnekajse. In recent years, Böcker was a member of the jazz club Syd's house band in Stockholm and sometimes accompanied poet Einar Heckscher. He was also part of Kebnekajse for a time in the 1970s and for a time after the group was reunited in 2001.
Böcker appeared in the films Il Capitano (directed by Jan Troell, 1991) and Minnen från Kaldabanan (directed by Ulf Brantås, 1992).