Henry Mancini's Peter Gunn theme. Lalo Schifrin's Mission: Impossible theme. John Barry's arrangement of the James Bond theme. These iconic melodies have remained a part of the pop culture landscape since their debuts in the late 1950s and early '60s: a "golden decade" that highlighted an era when movie studios and TV production companies employed full orchestral ensembles to provide a jazz backdrop for the suspenseful adventures...