SPICEWOOD, TXCountry-music legend Willie Nelson completely spaced on holding a Farm Aid benefit concert this year, the singer admitted Monday. 'Man, I've been doing the damn thing for 19 years, but somehow the plight of the American farmer slipped my mind this year,' Nelson said. 'We'll never get a venue by September now.' Nelson added that John Mellencamp or Neil Young could've called to remind him. 