The creation of ASMAC started with a various amount of composers and arrangers who were writing music for films, they were not getting the appreciation that they deserved and they decided to join together to make a group to promote their work and to educate the masses in their field of study.
Members originally dubbed their group "The American Society of Music Arrangers" (ASMA), the predecessor to ASMAC.
[2] The membership now numbers over 500 and has expanded to those who are, or have been, active in the preparation of music for movies, theatre, recording, television and live performances.
Each competition offers numerous cash prizes plus a rehearsal reading and recording by some of Los Angeles’ finest musicians.
Many members of the group gave their own testament at this festival including members such as Van Alexander (composer of the Ella Fitzgerald standard "A Tisket, A Tasket") Johnny Mandel (Mash and The SandPiper) Laurence Rosentha (The Miracle Worker, Becket) Doug Bsterman (Broadway Orchestrator), and many others.