The song “Happy Birthday to You” is copyrighted.

Warner/Chappell Music acquired Birch Tree Group Limited, the company that owns the copyright, in 1988 for $25 million. The company continues to insist that one cannot sing the “Happy Birthday to You” lyrics for profit without paying royalties. In 2008, Warner collected about $5,000 per day ($2 million per year) in royalties for the song.