During this time, she also performed across Beirut, singing at events for non-profit charities, including Lions Club, UNESCO, the Red Cross and The Lebanese School of the Blind and Deaf.

As a result, Mayssa performs in multiple languages including English, Arabic, Persian, Italian, French, Serbian, Bulgarian and Greek.

[9][10][11][12] Karaa began studying Arabic music under composer and instrumentalist Simon Shaheen while in her final year at Berklee, and soon became a guest vocalist in a few of his concerts in the United States and Canada.

[25] Heather Phares of Allmusic called Karaa's interpretation "otherworldly," stating that the track "is so striking that it's one of the finest songs on an album packed with big names.

"[30][31][32] Melding Arabic influences into Western music is MAYSSA's forte: notable recordings in her catalog include a version of Pink Floyd's “Comfortably Numb” accompanied by the band's Scott Page.

Fronting a band organized by the distinguished producer Don Was, she performed a haunting version of Seger's "Turn the Page" in both English and Arabic during the 22nd Annual "Concert Of Colors"in 2014 at the Orchestra Hall in Detroit, Michigan.

[34][35][36] In 2018, one of her original song, "Broken Lines" was included as a "up and coming" track on the NOW 66 compilation album distributed in the United States by Universal music USA.

[40][5][4] She launched her first single "Call Me a Stranger"[41][42] and music video of her full-length English solo debut, SIMPLE CURE to be released in June 2019.