Where’s Gesualdo is an a cappella quartet based in the San Francisco Bay Area. Its members have performed and / or recorded Andy Williams, Bobby McFerrin, Chanticleer, Dave Gruisin, David Grisman, Don Shelton, John Williams, Jose Feliciano, Mark Murphy, Michael Tilson Thomas, Phil Mattson, Richie Cole, Stanley Jordan, and Frank Zappa, among others. They've also sung on video games such as Guitar Hero, Karaoke Revolution, Dance Dance Revolution, and Garage Band.

Members: Kathleen Hollingsworth, Paul Kim, Stephen Saxon, Moorea Dickason