"Happy Birthday to You" is sung everywhere, but because it's copyrighted, it's rarely heard on TV or in movies. A filmmaker has filed a lawsuit seeking to make the song part of the public domain.

A federal judge on Tuesday ruled that Warner/Chappell Music does not own the copyright rights to the famous "Happy Birthday to You" song, which has become a nearly mandatory part of birthday ...

The winners of the Short Film (Live Action) trophy at this year’s Academy Awards cut short their speech to sing “Happy Birthday” to the film’s star, James Martin.