ABBA

ABBA was a pop music group formed in Sweden in 1970, consisting of Anni-Frid Lyngstad (Frida), Björn Ulvaeus, Benny Andersson (the "B-boys") and Agnetha Fältskog (Anna). Anni-Frid and Benny were a married couple, as were Bjorn and Agnetha, although both couples later divorced. They became one of the most commercially successful acts in the history of popular music, and they topped the charts worldwide from 1972 to 1982.

Number Ones is a compilation album of recordings by Swedish pop group ABBA, released by the Universal Music Group in 2006. This album features tracks that were #1 hits in many of the countries where ABBA were successful.

A limited edition included a bonus disc with 12 tracks from ABBA's #1 albums.

In the UK, the track list included the full length version of "Summer Night City" and "Ring Ring", oddly never a big hit in that territory.

In Taiwan, a hidden track follows I Have A Dream. This hidden track, titled ABBA Remix and running for 3.31, is a medley of the choruses of the 18 songs on the CD.