“If you can play a guitar and harmonica at the same time, like Bob Dylan or Neil Young, you're a genius. But make that extra bit of effort and strap some cymbals to your knees, suddenly people want to get the hell away from you.”
—Rich Hall, American comedian.
Easy...no problem at all. Although nowadays I get the 'tache caught in the harp....ouch!
For a real genius...watch Sam Draisey on youtube...there can't be many one armed guitarists out there!