Sonny Landreth and Cindy Cashdollar performing  at KGSR's Blues on the Green Series in Austin Texas, August 6, 2008. Sonny Landreth (born 1951) is an American blues musician from southwest Louisiana who is known as a slide guitar player. Eric Clapton has said Landreth is &quot;probably the most underestimated musician on the planet and also probably one of the most advanced.&quot; Cindy Cashdollar is a well known steel guitar player who has performed with Van Morrison, Bob Dylan and many other musicians.