The great problem with trills is the same problem with speed. When one wishes to play very fast, there`s a limit maximum for each one of us. Upper this limit, a "speed wall" becomes.Fortunately, each one of us can reach an infinite speed without any dificulty: when we play 2 notes together: if you play together C and D, the time spent to go from C to D is = O. So, you have played tis two notes at infinite speed. Now, try to lift one of your 2 fingers only a little and let the 2 fingers fall over the keyboard. Doing so, you may listen C-D very very fast, dont you? This technique is named parallel sets. First you must play C-D together, at a fast speed, many times. Then, you lift one finger a little and play many times in that way. Ex: finger 2-finger 3; then you play 3-2 many times also. After this, you play 2-3-2 and then 3-2-3. Now you are playing like grace notes. Do repeat a lot. After this, 2-3-2-3 and 3-2-3-2, etc... and after some weeks, you are trilling.There`s another important thing: trills are played also with wrist mouvements. If you play with your finger 2 curled and your finger 3 extended, letting them fall over the keyboard, your wrist moves as a lateral mouvement. The same if 3 is curled and 2 is extended. Doing this, you may balance your wrist very fast. After this, try to join both mouvements: lateral and 2-3-2-3....Believe me, this works. C.C.Chang, in his book "fundamentals of piano practice" teaches this much better than I do... because he speaks English very well and much better than me <hope this may help you. Best wishes. Rui
Different experiences, I supose. I couldnt trill well untill I have practice like I told in my anterior post. Now I can trill quite well.
No doubt keyboardclass will soon be linking his trill exercise. The problem with trills is that, as the laboured execution on the film shows...