In July 2014, Bonaobra rose to fame after a video of her performing “Let It Go” in a karaoke machine in Robinsons Place Manila was uploaded by Henrik Jensen. After the video viral online, Alisah became prominent in various singing competitions on television both locally and abroad.

In November 2014, Bonaobra auditioned for the second season of The Voice of the Philippines where she got through the blind audition rounds with her performance of Jessie J’s “Domino”. She then chose Black Eyed Peas’ apl.de.ap as her coach. During the semi-finals, Bonaobra performed “Lipad ng Pangarap” and a duet of “One Sweet Day” with Daryl Ong. As a result, she was saved from elimination and advanced to the finals. On the first day of the first round of the finals held on February 28, 2015, she performed “Ako Ang Nagwagi” with Dulce for the duets while for her solo performance, she performed Beyoncé’s “Love on Top”. On the second day of the first round of the finals, her solo song was “Go the Distance” while her duet song with her coach was a medley of “Hero” and “You Can Do Anything”. She advanced to the second round along with Jason Dy. In the second round of the grand finals, Bonaobra performed Celine Dion’s “All By Myself” but finished as runner-up after receiving 47.06% of the votes, losing to Jason Dy.>

In July 2016, Bonaobra competed for the WCOPA (World Championship of Performing Arts) held in Long Beach, California. She was part of the senior II female 18-24 category. She performed “I Surrender” for open entry and “All By Myself” for pop entry. She won a gold medal for industry award, as well as silver medals for broadway entry (“Let It Go”), gospel entry (“The Prayer”), and variety entry (“Go the Distance”)

In April 2016, Bonaobra competed for Eat Bulaga!’s Just Duet. She sang Whitney Houston’s “I Have Nothing” with her celebrity partner, Maricris Garcia to reach the semi-finals. In the weekly finals, she performed Celine Dion’s “Because You Loved Me” with Maricris Garcia. In the third qualifying round, she performed “Sayang Na Sayang” with Aegis. In the week-long grand finale, she performed “Love Me Like You Do” and “Defying Gravity” as her solo performances. She performed Swedish House Mafia’s “Don’t You Worry Child”, alongside her mother named Luzviminda Bonaobra. She also performed Whitney Houston’s “I Will Always Love You” with her celebrity partner, Ima Castro. In the championship, she also performed “When You Believe” with her celebrity partner, Aicelle Santos.

In August 2017, Bonaobra auditioned for fourteenth season of The X Factor. She performed Beyonce’s “Listen” during her audition in front of judges Simon Cowell, Sharon Osbourne, Nicole Scherzinger and Louis Walsh and was sent through to bootcamp.

On February 6, 2017, Bonaobra competed in the first season of It’s Showtime’s Tawag ng Tanghalan with Roland “Bunot” Abante and Raul Tubil. She performed Ted Ito’s “Maghintay Ka Lamang” in the daily round. She was eliminated in favour of Abante.