The legend goes... Jonas Berggren of Ace of Base met famous music producer Denniz Pop and gave Denniz a demo tape (cassette tape.. this was back in the early 90s!). This tape contained a song called Mr Ace. Driving in his car, Denniz Pop put the tape into his car radio. If you're old enough to remember cassette tapes, you'll also remember what pain in the butt they were. The demo tape got stuck in Denniz Pop's tape player! Not being able to listen to anything else, Denniz was forced to listen to Mr Ace. After a hearing it a few times, He could't get the catchy tune out of his head. Because of this, Denniz offered to produce Ace of Base's first album.
The song Mr Ace became the song known today as All That She Wants. Compare the two songs....
Mr Ace:
All That She Wants: