Billboard Year-End Billboard 200?

"All Shook Up" by Elvis Presley was the number 1 hit song for the year 1957.

That would be British pop singer, Adele

it was a bored which people place bills on originally

It was a magazine which represented the film, theatre and entertainment industry

Billboard is a magazine that covers the recording industry, including film, and provides charts of the top singles and albums. Billboard may be found here: http://www.billboard.com