Ottis Dewey "Slim" Whitman Jr. was an American country music singer-songwriter and guitarist known for his yodeling abilities and his use of falsetto. Recorded figures show 70 million sales, during a career that spanned more than seven decades. His prolific output included more than 100 albums and around 500 recorded songs; these consisted of country music, contemporary gospel, Broadway show tunes, love songs, and standards. Soon after being signed, in the 1950s Whitman toured with Elvis Presley.