"Tell Me Something I Don't Know" is the debut single bySelena Gomez.[2] The song was released as the sole single from the film,Another Cinderella Story soundtrack on August 5, 2008, and aRadio Disney version (which removes theHurricane Katrina reference during the semi-rap interlude; this version is also used for the music video) was released on September 9, 2008 digitally.[1] It peaked at number 58 on theBillboard Hot 100.
Released digitally in August 2008, the song sold 44,000 downloads within its first two months, largely due to airplay onRadio Disney.[3] The song was featured in promotional spots for theABC Family premiere ofAnother Cinderella Story, and had a 60% sales increase—reaching 30,000 downloads during the week of January 18, 2009, when the film aired on the network.[4] The song peaked at number 58 on the USBillboard Hot 100 chart, becoming the singer’s first ever entry in the American chart, and at number 13 on both theAustralian Hitseekers Singles chart and theUK Independent Singles Breakers Chart.[5][6] As of May 2017, the song has sold 1.1 million copies in the United States, making it Gomez's eighth best-selling song downloads-wise.[7]
The music video was directed byElliott Lester. The video starts with scenes reminiscent of (but not from) the film; Gomez cleaning a house and the maid yelling at her. Gomez then leaves the house and performs a dance routine with her backup dancers, while the maid watches from the house window. The video also features Gomez in front of a black background with lyrics from the song flying around her.[8]
