Record buyers still want their new music right Now.

Now That's What I Call Music — Vol. 6, the latest edition of the popular Now compilation series, sold more than half a million copies last week to keep the top spot of Billboard's 200 albums chart.

Containing hits from artists including Britney Spears, Incubus, R. Kelly and Evan & Jaron, Now — Vol. 6 moved more than 546,000 copies to hold on to #1 for a second straight week, according to figures issued by SoundScan on Wednesday (April 18).

Tupac's new posthumous double-disc collection, Until the End of Time, digs in at #2 on the Billboard chart after selling 196,000 copies last week, followed by Shaggy's Hotshot at #3 with 159,000 copies sold.

Two of the bigger movers and shakers on the new Billboard chart come courtesy of 13-year-old singer and Backstreet Boy sibling Aaron Carter and teen girl group Dream, as the artists' albums leap into the top 10.

Aaron's Party (Come Get It) sold more than 105,000 copies last week to surge from #15 to #4, fueled by Carter's new hoop dreams single, "That's How I Beat Shaq," earning Nick Carter's younger brother his first top-five record.

Dream, on a spring trek with 98° and the Baha Men, saw It Was All a Dream jump from #21 to #7 after selling more than 91,000 copies last week. The move gives Dream their highest chart position since It Was All a Dream debuted at #6 on the Billboard 200 in January.

Rounding out the rest of the top 10 are the Dave Matthews Band's Everyday at #5 (92,000 copies sold), Ginuwine's The Life at #6 (91,000), Dido's No Angel at #8 (89,000), Lifehouse's No Name Face (entering the top 10 for the first time) at #9 (89,000) and Nelly's Country Grammar at #10 (88,000).

Folk-rock singer/songwriter Ani DiFranco notched the highest debut in an otherwise quiet week for new releases. Her Revelling/Reckoning double album sold more than 37,000 copies to enter the charts at #50.

Other albums debuting on the new Billboard 200 chart include Slimm Calhoun's The Skinny at #78, the soundtrack to "Bridget Jones's Diary" — featuring new tracks from Shelby Lynne and Robbie Williams — at #111, DJ Skribble's Essential Spring Break — Summer 2001 mix album at #151, Monster Magnet's God Says No at #153, and Nick Cave and the Bad Seeds' No More Shall We Part — their first album since 1997's The Boatman's Call — at #180.