Composed of bass player Bob Skeat, guitarist Mark Abrahams, drummer Joe Crabtree, and guitarist Andy Powell, the latter of whom began recording with the group nearly 50 years ago, a legendary rock outfit plays Davenport's Redstone Room on April 16 in An Evening with Wishbone Ash, with the ensemble so gifted and venerated that its past openers at concert events have included the likes of Bruce Springsteen, Aerosmith, and KISS.