Carrying a Louis Vuitton backpack filled with old disks and demos to the studio and back, West crafted much of his production for his debut album in less than fifteen minutes at a time. He recorded the remainder of the album in Los Angeles while recovering from the car accident. Once he had completed the album, it was leaked months before its release date.  However, West decided to use the opportunity to review the album, and The College Dropout was significantly remixed, remastered, and revised before being released. As a result, certain tracks originally destined for the album were subsequently retracted, among them "Keep the Receipt" with Ol' Dirty Bastard and "The Good, the Bad, and the Ugly" with Consequence.  West meticulously refined the production, adding string arrangements , gospel choirs , improved drum programming and new verses.  West's perfectionism led The College Dropout to have its release postponed three times from its initial date in August 2003.