After 36 years as President and chief executive at Reference Recordings, founder John Tamblyn (“Tam”) Henderson is stepping down from day to day operations. He will continue consulting on important decisions and will be directing operations of the label’s new LP division, Reference Mastercuts. Marcia Martin, his partner and Vice-President for over 30 years, takes the helm as Executive Director and Managing Director of day to day operations. Martin’s role as RR’s business and finance…