She achieved global recognition in 2016 after the release of her song "Hope" and its video gained popularity in Australia, Canada, and most of Europe.

[citation needed] Heller has self-produced and self-published 4 EPs and numerous singles, and she has embarked on several nationwide and world tours.

[1] "Close Your Eyes" was named a finalist in the Performance category at the 2014 American Songwriting Awards while another song, "Apocolypse" was nominated.

[1][5] Four of Heller's songs were nominated at the 2014 Songdoor International Songwriting Competition in the Pop category ("The Day We First Met", "Life on the Run", "Whispers", and "Wounded Soldier").

[1][2]During this time, Heller began performing throughout Connecticut including opening for Rachel Platten at an 96.5 TIC FM Acoustic Cafe radio show and for American Authors at a similar radio-sponsored event.

After returning home, in the weeks leading up to her single, Lisa reached out to a few individuals going through particularly hard times in and around Connecticut.

[2][10][11] The song and video achieved global success, trending in multiple countries including Canada, Australia, and much of Europe.

[2][12] In late 2017 and into 2018, Heller was named as an ambassador for the #ICANHELP campaign and was invited to talk at the Nickelodeon HALO Awards and at Twitter Headquarters, where she spoke about the positive impact and leadership that she fostered online.

[15] Heller's "Light the Fire" supported the #ICANHELP project and was promoted by AWAL in numerous television campaigns including on E!, MTV, Netflix, Discovery, and A&E (though it is no longer available on music streaming services).

[citation needed] Lisa opened for Chelsea Cutler, another Connecticut born and raised artist, at a sold out show at Levitt Pavilion in Westport, CT. [25] In 2024, Heller released three new tracks.

Heller first cited Christina Perri, Demi Lovato, and Rachel Platten as major influences on her songwriting and style.