Bluegrass UndergroundOct. 21 - 7 p.m.At Cumberland CavernsAllen Stone with King Charles and Moorea MasaStone shaped the sound and feel of Radius with his edgy soul pop and folk rock. Park TheaterOct. 26Larry Gatlin & The Blackwood Quartet Andrew Jackson HallNashvilleOct. 18-23Rent With its inspiring message of joy and hope in the face of fear, this timeless celebration of friendship and creativity reminds us to measure our lives with the only thing that truly matters—love. There will be eight performances of Rent at TPAC. Tickets are available online or through the TPAC box office.