Her songwriting credits include the Black Eyed Peas' multi-platinum single "Just Can't Get Enough", the hook for Pitbull's "Castle Made of Sand", and Flo Rida's "Sweet Spot".

She also co-wrote Beyoncé's single "Countdown", Ed Sheeran's "Kiss Me", Marina and the Diamonds's "Primadonna", Frost wrote the end credit song and lead single for the "Endless Love" Soundtrack performed by Tegan and Sara and co-wrote "Lift Me Up" featuring Nico and Vinz and Ladysmith Black Mambazo on Guetta's album "Listen", and co-wrote Charlie Puth's single "Marvin Gaye" with Charlie Puth featuring Meghan Trainor.

Additionally, Frost co-wrote the single "Obsession" for DJ Vice Featuring Kyle and Jon Bellion.

She is nominated for a 2020 Latin Grammy Award with her song "Love" cowritten with Jesse & Joy, on their album "Aire".

Her first solo album The Wave (2002) was received positively by various music critics;... Of her writing style, Music Critic Johny Luftus wrote "Chicago singer/songwriter Julie Frost likes to place pleading heartache, clever wordplay, and determined pluck over nuanced arrangements".