What is the reasoning driving these endless reissues? Surely the record company would maximise profits by promoting the recently released - and far superior - Definitive Collection. On & On is a seemingly random collection of songs from ABBA's 10-year recording history, and as such is an odd listening experience: imagine a 12 track compilation of Beatles songs from their entire history and you'll appreciate how stylistically lumpy the result. Just fork out the extra for the Definitive Collection and get a great encapsulation of ABBA's fabulosity.

A bit skimpy on the song selection, but every one of them is a winner. The price is what makes this such a deal. For those who don't know how much an ABBA fan they really are, this is a very nice place to start.