Sylvester Weaver was the Louisville musician who introduced the guitar to blues recording in 1923, first accompanying singer Sara Martin and then on his own solo sides, promoted with a flurry of fanfare about his innovative technique from OKeh Records. He recorded “Guitar Rag” at his first session on November 2, 1923, and again on April 1, 1927, for OKeh in Chicago. Martin received a co-writer credit. The smooth bottleneck/slide number has lived on as a Western swing and country music standard, “Steel Guitar Rag,” after Bob Wills & the Texas Playboys recorded it in 1936 with Leon McAuliffe on steel guitar.