April 21 (UPI) -- Mac Gayden, the man hailed as the bridge between Nashville's country, R&B and rock music communities, has died at aged 83. Gayden died at his home in Nashville, according to his cousin Tommy Maddox Working. He reportedly died Wednesday. Hayden, who authored his 2013 memoir "Missing String Theory: A Musician's Uncommon Spiritual Journey," was best known for co-writing "Everlasting Love" and "She Shot A Hole in My Soul," and he co-founded the Southern rock bands Barefoot Jerry