From Bach to jazz and electronic music, Mark Isham has composed music for over 170 films . As a renowned trumpeter , he has collaborated with artists like Van Morrison, Bruce Springsteen, and The Rolling Stones . He is a favored composer for directors such as Alan Rudolph and Gavin O’Connor , and has frequently worked with Robert Redford, Jodie Foster, and Paul Haggis . This documentary offers a glimpse into the creation of film music, capturing Isham’s process in both his personal studio and major Hollywood studios .