You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: ""Happy Birthday to You", more commonly known as simply "Happy Birthday", is a song that is traditionally sung to celebrate the anniversary of a person's birth, the melody has traditionally been attributed to American sisters Patty and Mildred Jane Hill, an American songwriter and musicologist, in what year?" whose answer is 1893.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when was "Happy Birthday to You" composed
Useful Output:

Doc 1: The melody and lyrics to the song first appeared in print in 1912. Early “Happy Birthday to You”. Although popular and sung often, none of the
Doc 2: There are few things less pleasurable than a tuneless public rendition of Happy Birthday To You, says Rob Crossan, a century after the
Doc 3: Happy Birthday to you. Read more: Conductor tears apart 'Happy  composed it What if Chopin had written 'Happy Birthday'? Who
Doc 4: But was one of the world's most popular songs really written by Louisville sisters Patty and Mildred Hill in the 1890s?  Happy Birthday to You,
Doc 5: Mildred composed the melody for. “Good Morning to All,” and  lyrics to “Happy Birthday to You.” By 1935, it was well known as the