[3] Her music has been used on television series such as the opening theme songs of Dynasties ("Game of Survival"), Shadowhunters ("This Is the Hunt"),[4][5][6] and The Shannara Chronicles ("Until We Go Down").

Ruelle's first two albums, For What It's Worth (2010) and Show and Tell (2012), released under her birth name, Maggie Eckford, were indie pop.

Alongside the theme songs for Shadowhunters and The Shannara Chronicles, her songs have featured in prime time television series, including 9-1-1, Arrow, Batwoman, Inhumans, Dancing with the Stars, The Challenge XXX: Dirty 30, Cloak & Dagger, Eyewitness, Famous in Love, Grey's Anatomy, Guilt, How to Get Away with Murder, The Leftovers, Midnight, Texas, The Originals, Pretty Little Liars, Quantico, Reckless, Reign, Revenge, Riverdale, Scream, Sleepy Hollow, So You Think You Can Dance, Teen Wolf, Titans, The Vampire Diaries, The Walking Dead, Wynonna Earp, Doom Patrol and The Village.

[14] Her songs, "Madness" and "Rivals", were included in the TV show, Siren, and in the trailer for The Looming Tower mini-series respectively.

In January 2019, "Wake Up World", a collaborative track with Unsecret, was used as a teaser of the STARZ exclusive limited series, The Spanish Princess.

[11] For What It's Worth Show and Tell Ode to Shadows (2019) Up In Flames (2015) Madness (2016) Rival (2017) Emerge (2018) Earth Glow (2019) Exodus (2019) Somebody Else (2022)