 The first was Mark Knopfler, primarily known as leader and guitarist for the rock band Dire Straits.A big country fan who had recorded an album with Chet Atkins in 1990, Knopfler played guitar and sang background on a remake of Jones's first number one country hit from 1959, "White Lightning", and can be heard laughing as Jones hams it up on the vocal.The other rock musician who sang with Jones was Keith Richards of the Rolling Stones on "Say It's Not You", which originally appeared on Jones's 1967 album "If My Heart Had Windows".