Echosmith is an American rock and indie pop band formed in Toluca Lake, Los Angeles, in February 2009. The band, which is composed of siblings Graham, Sydney, Noah, and Jamie Sierota, signed to Warner Bros. Records in May 2012.

The group is best known for their song "Cool Kids", which reached number 13 on the Billboard Hot 100 and was certified double platinum by the RIAA with over 1,200,000 sales in the United States[1] and also double platinum by ARIA in Australia.[2] The band's debut album, Talking Dreams, was released on October 8, 2013.



Main article: Illusion

On April 24, 2015, it was confirmed via Twitter that Echosmith would be featured on the eleventh track of True Colors.


  • Sydney Sierota, Echosmith's lead singer, performed "Illusion" with Zedd at a set on June 20, 2015.[3][4]
    • She also performed "Illusion" and "Cool Kids" with Zedd at the 2016 Coachella festival on April 16, 2016, and appeared on the producer's Snapchat after his set.