Which lineup of musicians established the definitive bluegrass sound known today? Bill Monroe, Earl

Your Cheatin' Heart - Hank Williams

Bluegrass Breakdown

Tennessee [1968] - Jimmy Martin

TruCountry: Johnny Rodriguez - I Can't Help It(If I'm Still In Love With You)

Hit Parade of Love, written by Jimmy Martin (and maybe Wade Birchfield) and recorded in 1956.

Hank Williams - I'd Still Want You (1951).**