about trills...

[adgjgjg]

i have no problems with trills at all, but, i cant sustain one while playing other notes with the same hand.
is there any exercise that can help with it? how am i supposed to do those trills?

[brogers70]

My teacher suggested this exercise for maintaining trills while other fingers in the same hand are busy. In the right hand play a triplet trill slowly with 5 and 4, say on  G and F. At the same time, have fingers 1 and 2 alternate C and D at one third the speed of 4 and 5. If it's not clear, it would be

GFG FGF GFG FGF
C    D    C    D

Do analogous exercises in the left hand. Just do it a little bit each day, only as fast as you can do it completely relaxed and without tension. I found in helpful in fugues in which there is both a trill and another line that have to be played by the same hand.

[jjernigan]

Actually I am struggling with a trill right now but it's of a different sort.  Robert Estrin has a video on trills on YouTube and I'd suggest you watch it. Just search on something like "how to do trills."  For sustained trills he shows how to count the notes in the trill while still playing the left hand-and it's a really good technique. He also goes into how to start and finish it.  Particularly for trills like that in Mozart's Sonata in C major, measure 25!