How many of us will still be in our prime at 81? One performer Buddy Guy, the blues legend who recently released his 18th solo album, performs this Saturday at Masonic Hall on Nob Hill at 8pm. He’s barely slowed down since he opened for Jeff Beck, Junior Wells and the Stones over recent decades. The Blues is Alive and Well offers 15 tracks of great indigenous American music that a new generation of listeners re-appreciates. Check this classic guitarist/singer out. Tickets go from $40 and up.