Watch: 2011's Top 10 Hot 100 Countdown, with Exclusive Chart Trivia
Watch: 2011's Top 10 Hot 100 Countdown, with Exclusive Chart Trivia

Adele's "21" -- the biggest selling album of the year with 1.7 million copies and counting, according to Nielsen SoundScan -- is set to spend a ninth (and perhaps final) week at No. 1 next week.

Tuesday's (May 17) crop of new releases do not pose a threat to the reign of "21." The biggest of the newbies looks to be Seether's "Holding Onto Strings Better Left to Fray," which will be the highest new entry, with maybe 55,000 sold by week's end on May 22, according to industry prognosticators.

Lonely Island Sets Sail at No. 3 on Billboard 200, Adele Still No. 1

"21" will most likely step aside after next week for the bulldozer known as "Born This Way" by Lady Gaga. The latter set will hit retail on May 23 and, based on whom you ask, could be set for a first week in the range of 450,000 to 750,000.

Other albums looking to make high bows next week include the Danger Mouse and Daniele Luppi album "Rome," featuring vocals by Jack White and Norah Jones, and Parachute's "The Way it Was." Both sets could start in the top 10.

Also on track for a big entrance: the original Broadway cast album to "The Book Of Mormon." The show -- with music and lyrics by "South Park's" Trey Parker and Matt Stone and "Avenue Q" co-writer Robert Lopez -- recently earned 14 Tony Award nominations, the most of any show this year.