Hollywood actress Meryl Streep angered former Abba member BENNY ANDERSSON while shooting the big-screen adaptation of MAMMA MIA! - because she did not know the words to his songs. Streep, who stars alongside Pierce Brosnan in the film version of the hit musical, thought she could remember the lyrics to the 1970s hits perfectly - until she realised the words were completely wrong. She says, "The funny thing is, I didn't even know I knew much about Abba before I met Benny Andersson and (bandmate) Bjorn Ulvaeus, but then when I thought about it, I realised that all of their music was stuck in my head without my knowing it, that I knew every word to every song. "Except that I got most of them wrong, which caused a little tension with Benny, because he's quite the perfectionist."