Kaleo (stylized as KALEO) is an Icelandic rock band that formed at Mosfellsbær in 2012, consisting of lead vocalist and guitarist JJ Julius Son, drummer David Antonsson, bassist Daniel Kristjansson, and lead guitarist Rubin Pollock. They have released two studio albums, Kaleo (2013) and A/B (2016), as well as an EP, Glasshouse (2013). A/B has sold over one million albums worldwide. One of the singles from A/B, "Way Down We Go", was certified double platinum in the US and reached number one on the Billboard Alternative Songs chart on 20 August 2016. Kaleo received a Grammy nomination in 2017 for Best Rock Performance for the song "No Good".
Julius Son is currently working on the follow-up to A/B, titled Surface Sounds on Elektra. Lead singles "I Want More" and "Break My Baby" were released on 15 January 2020. The band's song "Alter Ego" was released on 13 March 2020. A forth single, appearing on the album, "Backbone" was released on 17 April 2020.