ABBA

ABBA were a Swedish pop group formed in Stockholm in 1972 by Benny Andersson, Bjorn Ulvaeus, Agnetha Faltskog, and Anni-Frid Lyngstad. They won the 1974 Eurovision Song Contest with Waterloo and went on to become one of the best-selling music acts in history, with estimated record sales exceeding 385 million worldwide. Andersson and Ulvaeus wrote every song, composing full backing tracks before lyrics existed — a process that produced melodies of unusual structural sophistication. Their engineer Michael B. Tretow developed a distinctive recording approach at Polar Studios, layering vocals and instruments with a precision influenced by Phil Spector's wall of sound but executed with Scandinavian exactness. The group's later albums — Arrival, Super Trouper, and The Visitors — moved into darker, more emotionally complex territory that belied their reputation as a purely festive act. The Visitors, recorded in 1981 on one of Europe's first 32-track digital recorders, is widely regarded as one of the most accomplished pop albums of its era. ABBA disbanded in 1982 but reunited in 2021 to release Voyage, their first studio album in forty years.