In this Feb. 12, 2012 file photo, Adele performs during the 54th annual Grammy Awards in Los Angeles. The British singer’s "21" was the
In this Feb. 12, 2012 file photo, Adele performs during the 54th annual Grammy Awards in Los Angeles. The British singer's "21" was the highest-selling album in the U.S. for the second consecutive year, according to 2012 sales figures released by Nielsen SoundScan on Thursday, Jan. 3, 2013. That's a first in the SoundScan era. (AP Photo/Matt Sayles, file)

NEW YORK - Well, well Adele - you did it again.

For the second year in a row, the British songbird's "21" was the biggest selling album of the year, according to Nielsen SoundScan. She sold 4.4 million copies of the album in 2012, after moving 5.8 million in 2011. The two-year domination is a first since SoundScan began tracking sales in 1991.

For those with short memories, "21" debuted at No. 1 on the Billboard 200 chart on March 21, 2011. The album hasn't yet left the weekly top 40.

Here are some other SoundScan sound bites from the year that was:

- 41 songs passed the 2-million-download mark. 1.65 billion units - that's physical albums, digital albums and digital songs - were sold.

- Katy Perry racked up the most radio airplay with 1.4 million plays.

- There were no Christmas albums in the top 10 - the first time this has happened since 2008. The highest ranking holiday album was "Merry Christmas, Baby," from Rod Stewart, which sold 858,000 units and came in at No. 15. In 2011, there were two Christmas releases in the top 10: Michael Bublé's "Christmas" (No. 2 with 2.45 million) and Justin Bieber's "Under the Mistletoe" (No. 8 with 1.25 million).

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