Tap Night, an important Yale tradition, takes place during the next week at midnight on a day not known to rushees until announced by the Singing Group Council.

Each piece in the repertoire was arranged, written, or transcribed by a Mixed Company member, and includes songs originally performed by Marc Cohn, Ben Folds, and Aretha Franklin, among others.

Arrangements added since 2010 include songs performed by Sister Hazel, Marc Broussard, Beyoncé, Mika, Whitney Houston, Katy Perry, Alicia Keys, Rascal Flatts, and more.

Mixed Company also sings original songs written and arranged by group members, such as "Prayer" (Esther Hyun '12), "How the Scenery Changes" (Brian Kim '04), and "Asking for a Friend" (Sofía Campoamor '19).

Mixed Company has performed for audiences on five different continents, including for the Education for Music Non-profit,[6] UN Secretary-General Ban Ki-moon, and former prime minister Tony Blair.

The Contemporary A Cappella Society has reviewed Mixed Company performances, calling them "rousing," featuring songs that are "outstandingly arranged" and "so full and so gorgeous.