Garth Brooks continues to assert his country music mastery over the record charts for the second straight week, although Metallica's new double-album of covers, "Garage Inc.," is set to make an impressive debut of its own -- by landing at number 2 on the new "Billboard" charts.

According to SoundScan, Garth Brooks' "Double Live" record remained atop the charts, but did drop in sales by almost 40 percent from its controversial, record-setting first week. Regardless of the second-week "slump," "Double Live" still managed to move some 649,000 copies -- almost 225,000 more than "Garage Inc." tallied in its initial week on record shelves.

The only other album to debut in the Top 10 is the new posthumous Tupac collection, "Greatest Hits," which charted at number 5 with 268,000 copies sold.

Despite the benefit of having the week's sales include those from the busiest shopping day of the year, almost all of the records from the industry's Super Tuesday release schedule have fallen

off significantly -- with the exception of diva-vixen Mariah Carey, whose "# 1's" album actually moved 10,000 units more than it did last week, even though it took a numerical slide in the charts from 4 to 7.

The biggest mover of the week, however, came from Celine Dion's new holiday-album, "These Are Special Times," almost doubled its sales in a week, a surge which nudged the record up from number 5 to 3.

Other albums of notice making their debuts on the SoundScan charts include Pearl Jam's "Live on Two Legs" at number 15, Wu-Tang leader Rza's "Rza as Bobby Digital in Stereo" at 16, the "South Park - Chef Aid" TV soundtrack at 17, a new Bone Thugs N Harmony compilation, "Volume 1: Collection," at 32 and Timbaland's "Tim's Bio: Music from 'Da Bassment'" at number 41.