Well, avoid anything "renaissance" or " Celtic".No Enya. personally my guess is have a listen to Afghan/Iranian/Turkish music( probably not Arab), a bit of Irish sean nos singing, the May Day Padstowe drummers and some Moroccan hardline music, and Balkan bagpipes(in no circumstances try modern Anglo/Scottish/Irish bagpipers). Add a touch of English rural souce singers and fiddlers and youre away.