Dave Mason,Canned Heatdue at SwingCanned Heat, one of America’s top blues-rock bands, has been added as the special guest act on the Dave Mason show Friday at Swing Auditorium in San Bernardino.Wolf-Rissmiller Concerts of Beverly Hills is presenting the show, which starts at 8 p.m.Canned Heat has been in existence since the late 60s, and has made a name for itself in both this country and overseas, where its blues music is a big hit. The group is led by popular Bob (Bear) Hite.Mason, the headlining act, brings his own backup group with him, and has been selling out shows almost everywhere he plays. He is acknowledged one of the finest guitarists-singers in the pop field today.