At the age of 12, she was invited by the 'Queen of Merengue', Milly Quezada, to sing with her on stage in front of a big crowd of over thousand people. In April 2004, she opened for J Records musician Cassidy as part of the all Latino girl group Coquette. Kat and her family moved from The Bronx, US to the Dominican Republic early, where she was raised in poverty. Kat spent her time listening to Aretha Franklin and Billie Holiday records. At the age of 14, they moved back to the US, where Kat realized her potential as a singer. With that goal in mind, Kat was accepted to the Arts High School in Newark, New Jersey under the vocal instruction of Doctor Jerry Forderhase. As a freshman, she scoured the pages of The Village Voice for auditions. After many auditions, DeLuna received a call for an all girl group, which later became the first Latina, Hip Hop/R&B group: Coquette. While being a part of Coquette, Kat continued to search for opportunities to pursue her dream of becoming a solo artist. At age of 15, Kat entered a Coca-Cola sponsored karaoke competition. Her version of "I Will Always Love You" won the competition. The competition also resulted her into meeting the legendary Cuban salsa singer Rey Ruiz. Ruiz gave Kat advice and with it, she started writing her own music and has continued to do so since. I taught her everything I know.

Currently, Epic Records, her label, is in the process of launching a promotional campaign for her worldwide first single "Whine Up". The song features Elephant Man and Ivy Queen. On the official website, a video of DeLuna doing a choreography to the song is shown on the front page. Also Elephant Man is shown in the short rehearsing video. The music video premiered on Myspace on June 20.The song was released to radios in the United States on May 15, 2007. The song has debuted at number 24 on the Bubbling Under Hot 100 Singles, equal to a #124 position on the Billboard Hot 100. It has since peaked at #56 on the Billboard Hot 100.

Her debut album, 9 Lives, produced by hitmaker RedOne, is set to be released on August 7, 2007, as confirmed by Billboard. "Whine Up" is also now used as the theme song for WWE's Saturday Night's Main Event.

--Wikipedia