R.I.P. Bo Diddley

(CNN) -- Bo Diddley, the musical pioneer whose songs, such as "Who Do You Love?" and "Bo Diddley," melded rhythm and blues and rock 'n' roll through a distinctive thumping beat, has died. He was 79.

Diddley died Monday, surrounded by family and loved ones at his home in Archer, Florida, a family spokeswoman said.

The cause was heart failure, his family said.

The world-renowned guitarist's signature beat -- usually played on an equally distinctive rectangular-bodied guitar -- laid the foundation for rock 'n' roll, and became so identified with him that it became known as the "Bo Diddley" beat. It was unlike anything else heard in pop music.