I find little difference between the tonguing on tin whistle, recorder, clarinet or sax. I use different tonguing techniques depending on the piece, it's mood and my mood. The 't-t-t-" and d-d-d- and bursts of breath are all acceptable- do what ever sound right to you. Before you get too engrained in one method (which will be hard to unlearn), go ahead and make some simple recordings of some of the passages trying out different tonguing techniques. See which sounds better. Ask someone else to listen and see if they have an opinion. What you hear recorded may sound different than what you sound like to yourself as you are playing it. Laura