Yeah Yeah Yeahs is an alternative rock band formed in New York City, New York, United States in the late summer of 2000. The band consists of Karen Orzolek (vocals), Nick Zinner (guitar, keyboards) and Brian Chase (drums).

Their music melds genres ranging from new wave to art punk and garage rock using heavy guitars, synthetic sounds, and screaming, erotic, bluesy vocals. Karen O is known for her energetic, animated stage presence, complemented by her outrageously colorful costumes designed especially for her by friend Christian Joy.

YYYs have recorded three studio albums: "Fever to Tell" and "Show Your Bones" and "It's Blitz!", as well as three EPs: "Yeah Yeah Yeahs" EP, "Machine" EP and the "Is Is" EP, which features songs written during the "Fever to Tell" era that were not recorded until 2007.

Nick Zinner also plays in Head Wound City, a thrash metal supergroup with members of the Blood Brothers and The Locust, and has toured with Bright Eyes for his album, Digital Ash In A Digital Urn. Brian Chase has an active side project in the form of his improvisational band, The Seconds.

In 2005 Karen O collaborated with Kool Keith on the track "Teaser", which was said to be on the porn film "Deep Throat vs. Lialeh" soundtrack, though this was never officially released. For the movie "Jackass 2", she collaborated with Peaches and Johnny Knoxville to record a track entitled "Backass". In 2007 she contributed vocals to a version of "Highway 61 Revisited" by Bob Dylan for the "I'm Not There" soundtrack. She also appears on the soundtrack of the forthcoming film adaptation of "Where The Wild Things Are", directed by Spike Jonze.

In 2008, Nick Zinner and Karen O both appeared on the Tiny Masters of Today album, Bang Bang Boom Cake. Karen also directed the video for their song "Hologram World".

The third full-length album, It's Blitz!, was originally set for release on April 13, 2009, however after being leaked to the Internet on February 23, the release date was pushed forward to March 9 for the digital version and March 31 for the CD, with an April 6 release for the rest of the world. The first single Zero was released on February 24, 2009. The album was produced by the band’s long-term producer Dave Sitek, along with Nick Launay.

Note: US hard core band YYY from 2000 tend to register on LastFM as Yeah Yeah Yeahs.