Clap Your Hands Say Yeah is a US indie rock band active since the early 2000s. The band was founded as a collaboration between singer-songwriter Alec Ounsworth, Sean Greenhalgh, Robbie Guertin, Lee Sargent, and Tyler Sargent. Ounsworth now performs under the name, as a solo artist. The band initially gained attention through the early online music blogosphere particularly on MP3 blogs, leading them to be regarded as a defining band of the blog rock era.