Hi shakesphere,
UD is right, guitars on keyboards just don`t do it. They lack the ability for expression(ie: hammer-on`s +pull-off``s)
Also correct finger style like Stairway to Heaven, I find much easier on guitar than keyboard and strumming can`t figure that out on keyboards either.(unless you sequence) Anyway , play at night+ sleep at day, you`ll figure it out any old way. And rember, "all the world in love with the night, and pay no mind to the garrish sun"