She grew up in Tinley Park, Illinois a southwest suburb of Chicago and attended Virgil I. Grissom Jr Middle School and Victor J. Andrew High School. She currently lives in Naperville, Illinois. Glocksen has been singing since age seven[citation needed] and she had classical music training in high school, where she learned to play the piano and flute. Glocksen tried out for the 5th season American Idol once, but didn't make it to the Top 24.

Prior to her second audition for the 6th season of American Idol, Glocksen worked as a dental assistant in Worth, Illinois and also performed in the cover band Catfight.

In Season 5, Glocksen auditioned in Chicago and sang "The Power of Love," which advanced her to Hollywood. In the first round of Hollywood auditions, Glocksen performed "If I Ever Fall In Love Again." She was eliminated on the final day of Hollywood auditions.

In Season 6, Glocksen had a third chance to audition on American Idol in Memphis her audition song was Black Velvet, and made it again to Hollywood. During Hollywood week, she sang the song "Be My Baby" by the Ronettes, together with Perla Meneses, Jessica Gordon and Marisa Rhodes in group round. On the final day, she performed "Have You Ever Really Loved A Woman." Glocksen finally made into the Top 24, and then into the finals. She was voted off April 4, 2007, making her the ninth-place finalist. Like Chris Sligh, Stephanie Edwards and Brandon Rogers before her, she was never in the bottom 3 or 2 until she was eliminated.

Following her elimination, she appeared on Live with Regis and Kelly and The Ellen DeGeneres Show, where she performed "Alone" for Ellen. She also appeared on ME TV on Nickelodeon, although she did not sing. After her duet with Phil Stacey during an Illinois show of the American Idols LIVE! Tour 2007, Gina's boyfriend of three years, Joel, appeared on stage and surprised her by proposing to her.[citation needed] In season 7 of American Idol Gina will be working on American Idol Extra. She is currently working on original material. One song 'When It Rains" has been performed on American Idol Extra.