Echosmith is made up of 4 siblings; Graham, Sydney, Noah, and Jamie Sierota. There first single was released in 2012 and was featured on a promo for the Summer Olympics. Their debut album, Talking Dreams, was released in 2013.The siblings come from a musical background and play a variety of instruments. Along with their own music, they have released covers from Coldplay, Adele, Rihanna, Hunter Hayes and many more. Their biggest hit to date has been 'Cool Kids' debuting on the Billboard Hot 100. Here are their official music videos.