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The IGCAC is the organization that oversees all things a cappella at Brown University. There are currently 11 groups under the IGCAC, each group with their distinct style. Brown is proud to have the most a cappella groups per capita in the US and home to numerous award winning a cappella groups. Many of our groups have also been featured in Best of Collegiate A Cappella (BOCA), Voices Only, and other recognition-based albums.
Information about the groups and other a cappella happenings on campus can be found on this site. Please use this website as your homepage for all things a cappella!
Please use our navigation menu to the left and if you have any questions, please contact the current a cappella 'czar' at

Brown A Cappella

A cappella is a very large part of Brown life and has been for decades. Brown students enjoy watching groups perform songs ranging from top 50s to jazz standards. With 11 groups under the IGCAC umbrella, the council tries to keep auditions, callbacks, and arch sings in order.

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The Role of the IGCAC

The 'Czar' of a cappella oversees all the groups under the organization and plans orientation events, arch sings, auditions, callbacks, a cappella meetings, large concerts, commencement events, and alumni events. We also make sure that there are no conflicts regarding song selections and helps to maintain the song list. The current 'czar' is Amit Chakrabarti (The Brown Derbies '21).

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Each group at Brown holds auditions during the fall and spring semesters. Audition customs are different for each group, but generally involve singing scales, pitch-matching, and a short personal solo. Auditionees are encouraged to try out for more than one group to maximize their chances of receiving callbacks. After the auditions, each group will post a Callback List on the midnight of the thursday of the week of auditions. Those called-back are then invited to attend the group's callbacks during the next week.

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Just as audition customs are different, callbacks are also different for each group. The IGCAC tries to keep callback conflicts at a minimum so that each student called-back can go to them. Callbacks can range anywhere from a short hour to four hours, depending on the group's customs and how many people are called back. Callbacks are generally more complicated than the auditions. Groups tend to have people learn and sing their arrangements and perform solos.

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