"Happy Birthday To You"
Yes, the song the entire Western world sings at birthday parties is 
actually owned by a large corporation, and every time someone sings 
it in public without permission, it is an infringement of copyright. 
The song's tune was published by schoolteachers Mildred and Patty 
Hill in 1893 as "Good Morning to All" in their book Song Stories for 
the Kindergarten. Children began singing it at birthday parties but 
with words they came up with themselves, which is how folk music 
typically develops. Nevertheless, the song-lyrics and all-is now 
owned by AOL Time Warner, the largest entertainment company on earth, 
and the corporation aggressively defends its property.