Sydney Sierota Biography, Sydney was born on 21 April 1997, located in Los Angeles, California, USA. The singer is an American music artist. Sydney enjoys 403k fans on Instagram. Sydney is a vocalist of the American group, Echosmith. She is advancing her name as an active part of the group. Alongside that she’s also involved in Modelling as well. Sierota has a devoted number of followers on the internet. Sydney has appeared on numerous soundtracks. In 2013, she released her debut single, “Cool Kids” along with her three brothers.