we all know that hamelin specialises in unkown repertoire- what i want to know is, HOW does he do this?how do you find out alkan wrote a symphony for solo piano? how do you discern that szymanowski's mazurkas are worth playing, let alone know who the hell szymanowski is? it costs enough money to buy the known repertoire, and often it's only available to you if you know of it beforehand and can look for it specifically. so if you don't know the works, i.e, if you've never heard anyone else play them, how do find them and how do you decide if it's worth playing?