Echosmith

The band's sophomore album finds them all a little older — and wiser.

The 20-year-old has since apologized.

Audien and Echosmith's Sydney Sierota talk about the 'futuristic' making of their latest collab.

Miley and Demi will square off, plus Fergie and Shania Twain will make big comebacks.

Love Echosmith? Well, vocalist Sydney Sierota is here to spill five things you might not know about herself or her three bandmates.