sentences:  Gary Marker
  
  Gary "Magic" Marker (May 23, 1943 – December 8, 2015) was an American bass guitarist and recording engineer, best known for his involvement in various psychedelic rock bands of the 1960s.A bass player with jazz leanings, who had studied at Berklee College of Music, Marker was a member of the Rising Sons between 1964 and 1966, along with Ry Cooder and Taj Mahal.