Dear Manny, How do you approach learning to trill well over the difficult boundaries on the trumpet such as C to D in the staff and G to A above the staff etc. I have just been playing them very slowly with semiquavers (sixteenth notes) until I get it right consistently, and then move up one speed on the metronome. I am using alternative fingerings on the G to A (1+3 and 3 respectively - is this OK?) to reduce the interval and can now do this to 16th notes at mm = 138. I am making progress but it seems very slow. Is there any approach I should be doing to improve my progress? The two pieces I am working on at the moment that require this are Haydn's Trumpet Concerto and Arban's Carnival de Venice. I would appreciate your advice on this, Graham.