Luna encouraged Park to audition for Star Circle Quest, a reality-based talent search television program.Her Korean ethnicity resulted in some trouble with the daily exercises set by the panel of Filipino judges.She signed with Star Magic after the completion of the competition and officially began her music career with the self-titled extended play, Sandara, which debuted atop the Philippine charts and has sold over 100,000 physical copies.It remains the only album by a Korean born act to be certified platinum by the Philippine Association of the Record Industry.The carrier single, "In Or Out", was a major dance anthem and became a nationwide hit, cementing her status as an 'imported' household name in the region.The album's later repackaging featured a new single, "Walang Sabit", which became very popular as well.Aspects of Park's personal life, including her relationships, family issues, and the fallout with Hero Angeles while still in the Philippines, attracted national attention as well.Rising to fame in the early-2000's, Park became an overnight superstar while participating as a contestant during the first season of Star Circle Quest in 2004, in which she finished as the runner-up.
She left the Philippines show business industry permanently and returned to South Korea with her family on August 1, 2007.
2NE1 has since released two eponymous extended plays, 2NE1 (2009) and 2NE1 (2011), and two studio albums, To Anyone (2010) and Crush (2014) in addition to several non-album singles.
Their first EP spawned the number-one single "I Don't Care", which won them the "Song of the Year" award at the 2009 Mnet Asian Music Awards, making them the first rookie group to win a daesung the same year of debut (2 wins).
Ian, and We Broke Up became one of the highest viewed web-dramas of the year.
Park was a fixed host on the highly-rated variety program Sugar Man (2015-2016), and now currently appears as a judge on Pinoy Boyband Superstar (2016).
Park joined ABS-CBN's entertainment stable called Star Magic in the wake of her success in the show, with her projects ranging from commercial endorsements to television appearances.