![Björn Ulvaeus Björn Ulvaeus](http://www.thefamouspeople.com/profiles/thumbs/bjrn-ulvaeus-1.jpg)
Singer and songwriter Björn Ulvaeus is perhaps best known as a member of the ABBA, one of the most successful musical groups of all time. Equally famous as a co-composer and co-producer of several films and musicals, he is currently serving as the President of CISAC, trying to ensure that creators are fairly compensated and properly credited for their works.