Sam Bush Instagram – For Your GRAMMY® Consideration: Sam Bush – Radio John: Songs of John Hartford for Best Bluegrass Album. Radio John is a tribute to Sam’s great friend and mentor, John Hartford. Sam plays every instrument on the album except the full band finale and sole original tune, “Radio John”. #sambush #newgrass #bluegrass #bestbluegrassalbum #grammys #grammyconsideration #radiojohn #radiojohnsongsofjohnhartford