Leon McAuliffe initially played a dobro before exclusively transitioning to electric lap and console steel guitars. In blues music The resonator guitar is also significant to the world of blues music, particularly the Southern style of country blues that grew out of the Mississippi Delta and Louisiana. Unlike country and bluegrass players, most blues players play the resonator guitar in the standard guitar position, with the fretboard facing away from the player. Many use slides or bottlenecks. Many players in the 1920s and 1930s, including Bo Carter, and others like Bukka White, Son House, Tampa Red and Blind Boy Fuller, used the instruments because they were louder than standard acoustic guitars, which enabled them to play for a larger crowd in areas that did not yet have electricity for amplifiers. For the same reason street musicians like Arvella Gray used resonator guitars while busking, e.g. on Chicago's Maxwell Street. One of the few Delta Blues players to play lap style in the 1930s was Black Ace, also known as B.K. Turner. He toured and recorded with his mentor Oscar "Buddy" Woods, who also played lap style Resonator guitar and Lap Steel. Woods, who was fifteen years older than Ace, taught him his guitar playing techniques. The instrument is still used by some blues players, notably Taj Mahal, Eric Sardinas, Alvin Hart, The Deacon Brandon Reeves, Warren Haynes, Derek Trucks, Doyle Bramhall II, Roland Chadwick, John Hammond Jr., Roy Rogers, John Mooney, and Megan Lovell of Larkin Poe. Mark Knopfler has also played the guitar, and his National resonator is pictured on the cover of the Dire Straits album Brothers in Arms. Varieties Single resonator guitars with a bowl resonator and spider (Dobro style) are often heard in bluegrass music, while tricone (National style) instruments are still preferred by many blues players. Single-resonator biscuit (also sometimes called National style) instruments are also currently produced, and give a different sound again. Many bluegrass players prefer wooden bodies, blues players either metal or wood. The early metal-bodied instruments were generally of better quality than the earliest wooden-bodied ones, but this may not be the case with more recent instruments. Metal bodies may be brass, aluminum or steel. Fiberglass has also been used as a body material, and a marble bodied resonator guitar is commercially available. Both metal and wooden bodies are often painted, or wooden bodies may be stained or lacquered, metal bodies