According to a Danish gossip magazine Lene pored whiskey at the man as well.
The 29-year-old Norwegian singer knocked out the producer at the 40th birthday celebration for Jens Otto Paludan, head of record company Universal Music Denmark.
Lene is said to have been furious after the producer commented that she was dancing seductively with an unknown man who was not her husband, former Aqua member Søren Rasted.
Lene Nystrøm hit the producer twice, hard enough for him to fall over.
«I have no comment», the producer told the Danish magazine. Jens Otto Paludan did not have any comment either.