Question

What was the name of the Pennsylvania country hillbilly singer and yodeler who switched to Rock Roll and became the first recording artist to have a mainstream national #1 hit?

Answer 1

Elvis Presley was the Pennsylvania country hillbilly singer and yodeler who switched to Rock and Roll and became the first recording artist to have a mainstream national #1 hit.

Step-by-step explanation:

The Pennsylvania country hillbilly singer and yodeler who switched to Rock and Roll and became the first recording artist to have a mainstream national #1 hit was Elvis Presley.