Music of the United States of America (MUSA) is a series of scholarly editions representing the full range of genres and idioms in American music.

MUSA ("mew-za") is devoted to expanding the legacy of American music available for performance and study by publishing a forty-volume series of scholarly editions of music that addresses the wide variety of American musical styles, including jazz, psalmody,
popular song, twentieth-century chamber music, art song, Native American ceremony, and the Broadway show. Each MUSA volume includes a substantial explanatory essay, elegant musical notation, and a detailed editorial apparatus. By bringing musical notation and scholarly interpretation together in each volume, MUSA endeavors to place the sounds of American music in the context of the nation's cultural life.

MUSA was founded in 1988 as a collaborative venture administered by the American Musicological Society through its Committee on the Publication of American Music (COPAM), and is published by A-R Editions. The Society for American Music contribute to MUSA through its representative to COPAM. MUSA is supported by a grant from the National Endowment for the Humanities and hosted by the University of Michigan at its American Music Institute.

Scholars interested in editing new MUSA volumes are encouraged to read the Proposal Guidelines and contact MUSA's Executive Editor.