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KeyStone A Cappella is a part-time professional six-voice contemporary a cappella group based in Philadelphia, Pennsylvania. Founded in 2011, KeyStone strives to present innovative, original arrangements of pop and rock music both familiar and obscure.
KeyStone has competed in Harmony Sweepstakes, hosted a national a cappella festival, opened for Grammy-nominated super-group The Bobs, headlined at the Hard Rock Café, Philadelphia, and assisted in a wedding proposal (she said yes!). KeyStone has also been featured at the Princeton Festival and the WHYY Connections Festival, and they regularly perform at private events. They are currently working on their debut album. KeyStone is a proud member of the Contemporary A Cappella League.