Between 2007-2012 she wrote and sang for an indie rock band that toured the US and Europe, and also produced a single in collaboration with Prodigy from Mobb Deep.
In 2015, she wrote, produced, and released her first pop-style album under the name Krystalmath- with her first single “Same Mistake” hitting Spotify’s New Music Friday playlist and then the Global Viral 50, peaking in 15th place and receiving over 200,000 plays within a couple of weeks.
The entire Krystalmath catalog was picked up in 2016 to be featured on In-Store playlists by stores like Forever 21, Gap, etc. by PlayNetwork, Inc.
However, realizing that she felt more comfortable in the world of alternative music, Rossi began re-focusing her attention on composing instrumental piano music in 2018 and has several releases planned for the end of 2020 and 2021.