I'd like to see some traditional dance — could you give me some information?
Literal
Dance [subject-が] want-to-see [explanatory-のですが] information [object-を] please.
Uses ~のですが to soften a request by providing context first: 'the situation is I want to see dance, and so...' The が at the end of the explanatory clause functions as a polite lead-in to the actual request.