http://mabi.world/w2s8z
I need to own one of these someday and make more compositions revolving the harp. I have no idea what it sounds like though...
Update 1: Oh wow, It's not the normal MSXspirit.dls, but in the newly updated MSXspirit04.dsl I think. Instrument number 25 "Nylon String Guitar. I'll have to log into the game and double check this!