The Membership Commission promotes and retains membership through outreach, providing member benefits, advertising, and other initiatives as needed and oversees production and distribution of the quarterly membership publication. In addition, it encourages, facilitates, and  supports the formation of new chapters. 

Professional Development  Commission oversees the education and professional development activities of the Institute. Its responsibilities include but are not limited to the oversight  of GIML-sponsored Music-Learning-Theory-related workshops and seminars, Professional Development Levels Courses (PDLC) including granting of  PDLC completion certificates, Faculty Certification, and the International  Conference on Music Learning Theory. 

The Race and Social Justice Group was created to create a working framework for GIML to engage in conversation, reflection, and action related to equity and justice. In its first two years, the group has created a list of recommendations for the organization, provided professional development for GIML faculty, the national board, and engaged world-renowned presenters to partner with the organization as it looks inward and forwards to more equitable practices.

The Historian Committee’s primary focus is to provide GIML with an accurate historical timeline from the organization's beginning to the present. The purpose of the Committee is to research, gather, organize, analyze, interpret historical documents, and conduct interviews with past and present members. The Committee works closely with the Edwin E. Gordon Archive at the University of South Carolina to support GIML research.