Series I, The Music Series, contains 15 sub-series: Professional Ensembles Dated, Professional Ensembles Undated, Berkshire Symphony, Williams Trio, Victor Hill, Student Instrumental Ensembles, General Student Ensembles, College Ensemble Non-Williams, Choral Ensembles, Kusika, the Marching Band, Music Dept. Lectures, Ethnomusicology, Group for 20th-Century Music, Student/Faculty Concerts.
- Professional Ensembles Dated
- Professional Ensembles Undated
- Berkshire Symphony
- Williams Trio
- Victor Hill
- Student Instrumental Ensembles
- General Student Ensembles
- College Ensembles Non-Williams
- Choral Ensembles contains posters that provide information on the times and locations for performances of the choral groups, (Williams Gospel Choir, Ephlats, Williams Octet, for example) on campus.
- The Marching Band
- Music Department Lectures
- Group for 20th-Century Music
- Student/Faculty Concerts