Kenny Chesney, Vince Gill, Brad Paisley, Keith Urban and Peter Frampton are among the artists donating flood-damaged musical instruments from their personal collection to NASH20, a nonprofit organization supporting continued flood relief efforts in Nashville. An online auction offering dozens of damaged guitars, mandolins and other instruments will begin Oct. 12. NASH2O is a charitable initiative to raise money from damaged instruments and equipment to benefit Nashville-area musicians, with a portion also going to local fire and rescue departments in need of equipment.