John and Stephen Gomez (The Summer Set)

Apparently there’s something about brothers who keep the beat going. Scottsdale, Arizona band the Summer Set’s bassist is Stephen Gomez, brother to guitarist/pianist/back-up vocalist/Renaissance man John Gomez.

John Nolan and Michelle DaRosa (Straylight Run)

Straylight Run was born from the ashes of Taking Back Sunday’s original lineup and served as a blessing in disguise—like, have you even heard “Existentialism On Prom Night”? Former TBS brain John Nolan enlisted his sister Michelle to launch the band in 2003. They officially called it quits in 2010, but man, did they leave us with some good records.

Eisley

Tyler, Texas folky punks Eisley began as a sibling band in the most traditional sense of the term. They were a group of brothers, sisters and one cousin: Sherri DuPree, Chauntelle DuPree, Stacy DuPree, Garron DuPree (Bass) and Weston DuPree. Eventually that lineup fractured, but they’ve done an excellent job of keeping it in the fam: Sherri, Garron and Weston still hang around; and the current touring lineup also includes their cousin Remington DuPree and friends Elle Puckett and Jedidiah Lachmann.

Bertrand and Eric Poncet (Chunk! No, Captain Chunk!)

Forming a band with your fam is not just an American endeavor—it exists in Europe, too. French band Chunk! No, Captain Chunk! includes singer-brother Bertrand Poncet and guitarist-brother Eric.

Echosmith 

Consider Echosmith a sister band to Eisley—the pop group features all siblings. Echosmith is singer Sydney Sierota and two of her brothers: bassist Noah and drummer Graham. Fourth sib and former guitarist Jamie left the band in 2016 to care for his newborn son. 

Aaron and Michael Weiss (MewithoutYou)

Philly indie-punk heroes keep it close, too. MewithoutYou is fronted by Aaron Weiss (who you might’ve just heard on the new Paramore record). His brother Michael plays guitar in the group, too. 

Eddie and Riley Breckenridge (Thrice)

Thrice is a heavier band than a handful of others on this list, and we have the bros behind percussion to thank for that: Eddie Breckenridge, who handles bass and synth, and Riley Breckenridge, Thrice’s drummer, help give the group that signature sound.