Have a new band piece that's full of trills and you're not sure how to tackle them? Here are a few simple rules* to help. If you see one (or both) of these signs: Follow these steps: Check your key signature. Starting on the written note, alternate between that pitch and the one above. End on the written note. Try these: Start on the main note and trill to the note above, based on your key signature. In this case, we start on the G, trill to an A natural (because A is not al