If it’s got strings, Gideon Klein probably plays it. The in-demand session player helped shape the sound of the Brothers Osborne with his fiddle playing on their 2020 album, Skeletons, and he pushes songs like Brennley Brown’s “Remember It Wrong” and Maggie Miles’ “Swim (Reimagined)” to soaring heights with his orchestral turns. And his punchy electric guitar work is the engine powering Delta Rae’s jubilant “Take Me There.”