Patty Hill is perhaps best known for co-writing, with her sister Mildred Hill, an a capella song that was translated into 18 languages.
Patty Smith Hill (March 27, 1868  May 25, 1946) was a composer and teacher who is perhaps best known for co-writing, with her sister Mildred Hill, the tune which later became popular as "Happy Birthday to You". 
 According to the 1998 "Guinness World Records", "Happy Birthday to You" is the most recognized song in the English language, followed by "For He's a Jolly Good Fellow". 
 The song's base lyrics have been translated into at least 18 languages. 
