From: Stockholm, Sweden
I first listened to them on purpose: after Pandora fed me "SOS" by Th' Faith Healers and I liked it enough to do some research and discover that it was an ABBA cover. Then I listened to the ABBA version and after a couple of plays I actually liked the original more than Th' Faith Healers' grunge version.
Sound: pretty much defined '70s pop
Further listening: Here was one of the last songs to miss the cut on this version of the chart. It's like ABBA crossed with No. 1 in Heaven era Sparks.