ABBA recorded their 1975 hit 'Mamma Mia' on March 12, 1975, after initially thinking about giving it away to another band.

I never stopped being an ABBA fan! Paul - Carlisle This is the only Abba single I ever bought. Gave it to a girl at school - she stopped going out with me! Russell Ham, Plymouth I think there is ...

In Germany and the UK, it became the first of many ABBA singles to hit number one. The song was recorded in Swedish, English, German and French and the single sold more than 5 million copies.