Santo & Johnny are Italian-American brothers from Brooklyn (their last name is Farina) who wrote and recorded, in 1959, "Sleep Walk," the last instrumental to hit #1 on the Billboard Hot 100 in the 1950s; while serving in the Army, the boys' father heard a steel guitar played on the radio and insisted that young Santo and Johnny learn the instrument -- in fact, Santo does play a Gibson six-string steel guitar on the duo's records, while Johnny opted for a standard electric guitar.