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The album's first single, "Womanizer", was an international hit, reaching the top of the charts in over twenty countries worldwide, including the Billboard Hot 100 in the United States. The second single, "Circus", debuted at number three in the USA. The single "If U Seek Amy" managed to reach top 20 on the Billboard Hot 100. Spears promoted the album with a series of live performances, including her first world tour in five years, The Circus Starring Britney Spears. The first single, "Womanizer", also received a Grammy nomination for Best Dance Recording. The digital tracks from the album in the U.S. have sold a combined total of 8 million units as of December, 2010. As of late 2010, the album has sold over 5 million copies worldwide.

More infoformations about CD:
http://en.wikipedia.org/wiki/Circus_(Britney_Spears_album)
http://www.discogs.com/Britney-Spears-Circus/release/1554179

Tracklist:
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01. Womanizer [3:44]
02. Circus [3:12]
03. Out From Under [3:54]
04. Kill The Lights [3:59]
05. Shattered Glass [2:52]
06. If U Seek Amy [3:37]
07. Unusual You [4:21]
08. Blur [3:09]
09. Mmm Papi [3:22]
10. Mannequin [4:06]
11. Lace And Leather [2:50]
12. My Baby [3:22]
13. Radar [3:50]
14. Rock Me In [3:18]
15. Phonography [3:34]
16. Amnesia [3:57]
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Total time [00:57:08]