Originally formed back in early 2009, Echosmith, solidified its prominence in the indie-pop realm with the release of their wildly successful hit, “Cool Kids.” The song reached number 13 on the Billboard Hot 100 and was eventually certified double platinum in the United States with a staggering 1,200,000 sales in the U.S. alone. Just as impressive is the simple fact that the band is comprised almost entirely of siblings of the Sierota family. As originally formed back in 2009, the group consisted of Sydney Sierota, lead singer, along with brothers Noah Sierota, Graham Sierota, and Jamie Sierota.