Commercially, Super Trouper, ABBA's seventh album, was another worldwide blockbuster. "The Winner Takes It All," its lead-off single, released several months in advance of the album in most territories, was a smash; for example, it was the group's 14th consecutive Top Five hit in the U.K. and their eighth number one there. The title track was also a British chart-topper (their last), as was the album, their sixth. "Lay All Your Love on Me" made the U.K. Top Ten, and "On and on and On" was released as a single in some countries, hitting the Top Ten in Australia. (Typically, American success was more modest, though the album went gold, and "The Winner Takes It All" was a number one adult contemporary and Top Ten pop hit.) Musically, Super Trouper found ABBA, always trend-conscious, taking ac...