The Star Tribune reports Mariah Carey gave an exclusive lunchtime CD-listening party on Tuesday at Flyte Tyme Studios. Their insider reports that a few bigwigs from Sam Goody and Best Buy got to hear four songs from Carey’s ‘Charmbracelet’, due December 10. Rapper Da Brat was there to act as emcee, sorta. Carey, who looked diva-liciously casual in pigtails, leather boots with six-inch heels and a sweater zipped down to there, didn’t let on much about the CD except that she and *NSYNC star Justin Timberlake do a duet. She didn’t explain why she used only two of the five songs that she’d recorded with Jimmy Jam and Terry Lewis. But they were nice enough to host the party anyway.