Hi, in a piece of music we often play has a sop cue in it and in the sop cue there is a top A trill (A to B), but whenever my friend plays it, it comes out as a A tremolo. I then had a go of trying to practice this sop cue at home and it came out as a A tremolo. My question is - is there an easier way of trilling A to B rather than using valves 1,2-2? I know you can trill A to B going 3-2, but my pinky finger is weak and I struggle pressing the third valve so quickley. I'd tell my mate to play it down an octave, but I think that would upset him, hehe.