Billed as an "interactive dance party duo" and described as "the Beastie Boys meet Sesame Street",[1] Koo Koo showcase a colorful live show that relies heavily on audience participation, featuring overtly silly sing-along songs that are typically accompanied by their own individual dance move.

[2] The duo has toured nationwide, performing for both children's events and at mainstream music clubs with rock and punk bands.

[2][5] The subject matter of Koo Koo's songs rarely stray from juvenile "goofball" territory, covering such topics as cats, dinosaurs, letters of the alphabet, ninjas, food fights, fanny packs, hopscotch, slumber parties and peanut butter and jelly sandwiches.

[5] Neil has also mentioned that Koo Koo's songs try to touch on a nostalgia factor for older audiences, drawing on his and Bryan's memories of childhood; one prominent example includes the duo's tradition of throwing a playground parachute into the crowd at the end of their sets, the kind "that you remember from PE class in elementary school".

[8] With the exception of Whoopty Whoop, their "greatest hits" compilation Rad-trospective and the 2021 album Slow Clap, none of Koo Koo's music is sold in a physical format, as the group prefer to release all of their recorded music through "pay what you want" downloads on their website, essentially making the entirety of their catalog available for free.

[4] According to Bryan, all of their songs are written expressly for their live shows and the audience participation that accompanies them, and thus are never considered outside of that specific context.

[9][5] Bonding over their similar tastes in music, the two became quick friends, eventually studying abroad in London and backpacking through Europe together before ultimately deciding to start a band.

[2][7] Following that group's disbandment, Bryan and Neil realized they found being in a traditional band a "boring" experience, and set out to start a new musical project together that would be radically different, emphasizing dance-based theatricality, audience interactivity and an unapologetically goofy sense of humor.