The term ABBA HIT is composed of three popular songs by the Swedish band ABBA. The first song is 'WATERLOO' (8 letters), which was the band's first international hit and won them the 1974 Eurovision Song Contest. The second song is 'FERNANDO' (8 letters), a romantic ballad released in 1976 that became one of their most successful singles. The third song is 'SOS' (3 letters), a 1975 single that was the band's first UK number one.