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: "Root Beer Rag is a song from the 1974 albuim by what American pianist?" whose answer is William Martin Joel.
Each document should contain about 30 words, and these documents should contain useful information.

Query: Root Beer Rag 1974 album American pianist
Useful Output:

Doc 1: Root Beer Rag is a ragtime-styled song composed by Billy Joel from the 1974 album Streetlife Serenade. The song plays at about 145 BPM and
Doc 2: Meet: Root Beer Rag – Billy Joel (1974) It never was a hit single in my country, but I didn't have to think very long to spend a few weeks of my pocket money
Doc 3: BILLY JOEL - Root Beer Rag. 1974 ~ Piano cover (Performed and arranged by Michael Kenton) For piano lessons / performance enquires,
Doc 4:  Rag» was written for the 1974 album release «Streetlife Serenade» by American pianist/vocalist/composer Billy Joel. After the success his
Doc 5: Sheet music: https://fmsheetmusic.com/root-beer-rag-billy-joel-intermediate-piano/ Arranged by Jennifer Eklund.