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Justin Bieber's "Believe" is the year's top-selling debut album.

Nielsen SoundScan reports sales of 374,000 copies following its release last week, giving the 18-year-old Canadian pop singer the fourth No. 1 album and the best sales week of his young career. "Believe" also debuted at No. 1 in 29 other countries.

The album topped Madonna's "MDNA" as the year's top debut thus far and is the best-selling first-week release since Drake's "Take Care" came out in December.

Kenny Chesney's "Welcome to the Fishbowl" followed Bieber last week with 193,000 albums sold.