She appeared in local productions in and around her home of Union City, New Jersey since childhood, in venues such as the Park Performing Arts Center and Montclair State University, where she majored in musical theater.

[6] As a child, some of her earliest creative influences came from the Colombian folk songs and poetry that her grandparents, Soledad and Carlos, taught her at the dinner table.

But once I got to high school, I decided to throw myself into the English as a Second Language program and took Spanish classes with all of the kids who had just come to this country, and it forced me to learn.

[11] Strong began her singing career in the contest circuit at age 9, when she won New Jersey Network (NJN)'s Hispanic Youth Showcase with the first show tune she ever learned, "Much More" from The Fantasticks.

[11] In November 2001, 11-year-old Strong was selected from more than 2,000 entries and 10 finalists as the winner of Oscar Mayer's second Concurso Cantando Hasta La Fama ("Sing for the Fame") contest, in which she sang the brand's jingle in Spanish.

Strong's performance of the William Shakespeare sonnet “My Mistress’ Eyes are Nothing Like the Sun” appears as the fifth segment of a DVD compilation of the 2006 – 2007 finals that was released that November for schools and teachers.

[9] Strong slept on the street for hours in a sleeping bag in front of the Roundabout Theatre Company in order to audition, an act that she saw as the start of her professional career.

[28] June 2011 saw the debut of Perks, a musical webseries described by Playbill as "Glee meets Wii", in which Strong stars as Courtney, the object of affection for geeky high school gamer Josh (Alex Wyse), the series’ male lead, who is too shy to express his feelings to her.

Strong sang all 23 songs in the production, learned multiple dance numbers, and was the understudy for Ali, the supportive best friend of the show's main character, Sophie.

[36] The following month saw the release of Strong's debut EP album, Rewind,[35] a 12-track record described by Playbill as an "eclectic fusion of Latin, country-folk and piano rock.

"[37] In analyzing the title track "Rewind", whose lyrics describe making amends with a lover, Katie Lebert of Gadfly Online stated, "In her revealing chorus 'Can I apologize for what I have realized?

[22] Not long after, actor/director/producer Diego Luna flew Strong to Bogotá, Colombia to appear in an episode of Back Home,[39] a documentary TV series on the Fusion network that follows a different celebrity guest each week on "an intimate and emotional voyage to their family's country of origin.

"[40] Strong subsequently appeared in Under My Skin, a comedy written by Robert Sternin and Prudence Fraser, who were the creative forces behind TV series such as Who's The Boss?

[41] Strong's debut, dual-language album, March Towards the Sun, was released August 31, 2014 on iTunes, Amazon, Google Play and Spotify.

Of the album overall, Lebert said, "Her truthful, relatable lyrics shine with Broadway strength vocals as she is accompanied by a symphonic variety of instruments and styles.

Varying between catchy, carefree songs to emotional ballads to Latin inspired, romantic melodies, Hacia el Sol is undoubtedly one of the strongest, most unique albums I have listened to this year.

Mach called "One and Only" "wonderful", and mused, "Allison shows, with this song, that folk music does not necessarily have to be all about fragility, flippy-floppy hippiness or floating fluffiness.

"[42] August 2014 also saw the premiere of Nickelodeon's animated children's television program Dora and Friends, on which Strong provided the voices[4] of villagers in an episode that aired that year.

[7][43][44] In 2015, Strong played Ado Annie Carnes in an Annandale-on-Hudson, New York production of Oklahoma!, for which she sang "I Cain't Say No".

[46][47] On February 4, 2016 Strong appeared in "Alistair Pitt", the 13th episode of the third season of the NBC crime thriller TV series The Blacklist.

[10][38] Aside from solo performances, Strong is part of a studio band that includes fellow Jersey musicians Alex Brumel on guitar, Eric Novod on percussion and Erik Kase Romero on bass.

She enjoys baking, playing the piano, performing the national anthem at events, and hosting a show on a local television channel.