Atma: Penn’s all-female South Asian a cappella group's got soul, something they express not only with their name, but also with their sultry blend of South Asian and mainstream music.

Counterparts: Feelin’ classy? This co-ed jazz and pop a cappella group is just what you need. Old-school jazz standards, as well as more modern artists, give the right mix of classic and new.

Penn Glee Club: They're the oldest and most traditional group on campus.While they’ve updated things since their inception, this group will always deliver a good dose of Penn pride.

Off the Beat: This co-ed modern rock a cappella group is too cool for school, and they’ve got the talent to back up their bravado.

Pennchants: Originally begun as a bunch of renegades from the Penn Glee Club, this all-male group set out to freshen up the a cappella scene, and have done so ever since.

Penn Masala: They sell out Irvine Auditorium every year and performed for President Obama last month — these guys are pretty good at what they do. Their all-male a cappella with a smooth blend of Hindi and English is always a crowd-pleaser.

The Penny Loafers: One of Penn’s most eclectic a cappella groups, the Penny Loafers perform songs spanning modern rock, jazz, indie and pop.

Quaker Notes: One of Penn’s all-female a cappella groups, they are known for using a wide variety of genres to showcase the talents of individual members.