CeDell Davis (born Ellis Davis, 9 June 1927) is an American blues guitarist and singer.Davis is most notable for his distinctive style of guitar playing. Davis plays guitar using a table knife in his fretting hand in a manner similar to slide guitar, resulting in a welter of metal-stress harmonic transients and a singular tonal plasticity. He uses this style out of necessity. When he was 10, he suffered from severe polio which left him little control over his left hand and restricted use of his right. He had been playing guitar prior to his polio and decided to continue in spite of his handicap, and developed his knife method as the only way he could come up with of still playing guitar.