A light loose thumb is essential.
Some people say you should use the wrist for octaves kind of whacking your hand up and down.
That leads me to asking if anyone actually finds this technique helpful?
I don't understand this technique, it has never worked for me, even though it is recommended in the AMEB (Australian Music Examination Board) technical workbook. That leads me to asking if anyone actually finds this technique helpful?
I wonder why there is so many different opinions on how to play octaves? How do they teach octaves if nobody can agree on how to do it?
When you add the last piece that is missing, all the sudden it's great. So you naturally think that whichever of the several issues you mastered last is the key. But it's not; it's just the last one that you learned. Others learned the components in different orders, and they each think the last one they learned is the key. So then they argue about what's important is playing octaves or trills or whatever.
My impression is that for any difficult technique on the piano, multiple things have to be done correctly for the technique to work smoothly. Maybe there are issues of finger and wrist relaxation, arm weight, forearm rotation, or what have you, to make something work beautifully. When you are missing one of those things, it doesn't work. When you add the last piece that is missing, all the sudden it's great. So you naturally think that whichever of the several issues you mastered last is the key. But it's not; it's just the last one that you learned. Others learned the components in different orders, and they each think the last one they learned is the key. So then they argue about what's important is playing octaves or trills or whatever.