Polar publish ‘ABBA,’ the Swedish quatuor’s third album featuring ‘Mamma…
'ABBA' feat. 'Mamma Mia' & 'SOS' is their eponym third studio album released on April 21, 1975 by Polar.Track Listing : 1.Mamma Mia (Benny Andersson, Björn Ulvaeus, Stig Anderson) - 03:32 . 2.Hey, Hey Helen (Benny Andersson, Björn…