Question: What was the name of the pop group that Agnetha Fältskog was in that sold over 380 million albums and singles?
Sentence (from "Tio år med Agnetha"): Tio år med Agnetha (Ten Years With Agnetha) is a 1979 compilation album by Swedish pop singer Agnetha Fältskog, one of the members of ABBA.
Relevant evidence: No