Gallagher's song "Nothing Ever None" was featured on the soundtrack for the 2011 film
Someday This Pain Will Be Useful to You, and her song "Damaged" appears on the 2012 film
Thanks for Sharings soundtrack. Gallagher has released four solo
EPs of her original music. She released her debut EP, ''I'm Fine
, in 2014 and her second, American Spirit
, in 2015. She released three singles in 2019 and 2020. In 2020, Gallagher released her third and fourth EPs, Demos, Vol. 1
and Demos, Vol. 2'', which she produced by herself in her family house in the woods of Connecticut during the
COVID-19 pandemic. Gallagher has done many live shows where she performs her music in Los Angeles and New York City. Gallagher made her Broadway debut as the Voice of Martha in
Deaf West Theatre's 2015 Broadway revival of
Spring Awakening, also serving as the show's dance captain. She auditioned for the part after a suggestion from fellow theatre actor
Ben Platt. Gallagher has done several television projects, her most notable role being Annika in the
Lifetime series
You, in which she appeared in eight episodes of Season One. Gallagher also guest starred on
The Flash and
Indoor Boys. In 2019, Gallagher joined the cast of
Jagged Little Pill on Broadway in the role of Bella Fox. She was an original Broadway cast member.
The Daily Beasts review of the show said Gallagher was "excellent in a truly tough part", while
Deadline Hollywood noted that she "brings the focus of the many-issued musical to its most powerful note". In the show, she sings an original
Alanis Morissette song, "Predator" that was created for the musical when Gallagher's part was upgraded from a featured ensemble role to a principal role. On October 15, 2020, Gallagher was nominated for the
Tony Award for Best Featured Actress in a Musical, her first Tony nomination. The show began previews on
Broadway in November 2019, opened on December 5, 2019, and closed on December 17, 2021, due to the pandemic. == Acting credits ==