Advice about playing arpeggios

Cool. Glad if that's helping. I think you have to be careful not to steer too heavily in one direction all the time. For years, I did extreme supination in a very lazy and frankly useless way. As a result, I've generally been looking at trying to get the knuckles as level as possible. However, I think it's possible to get locked into that position, if you devote constant focus to it. I'm now looking at the tilt as something that is frequently very useful- but which I had just done completely wrongly before. I think the key is basically the high knuckles. Try slanting your hand as much as 45 degrees down towards the 5th- but use the other hand to check the knuckle is pressed as far out as it will go). I think this is the key element that I'd always missed in previous years. If you avoid all traces of knuckle droop, then you don't always need to pronate for the 5th. If you have options either way, it's far less likely that you'll feel strain when using pronation. I'm only just discovering quite how far you can sometimes tilt- as long as the knuckle keeps that elevated position.

So, I've been playing around with the ideas suggested over the past few days, and also went back to the chapters in Honing. I'm finding that giving thought to what is leading the movement (particularly with pronation) is very useful. It seems leading with either the wrist or the second MCP joint works best for me at the moment. I'm also getting my hand into either and fully pronated or supinated position and just resting it on the keys for a while. It's handy for spotting any excess raising of the shoulders (which is incredibly insidious) and letting the arm hang freely. I'll report back as I learn more.

So, I revisited arpeggios this evening after a small break and found I'm still no closer to a solution. While I did start working on thumb over a while back, I put that to one side to work on thumb under, which occupied my practice for a couple of weeks. I tried various things mentioned in my previous posts: resting my hand in a supinated position; practising putting under/going over the thumb at intervals of a second, third and fourth; activating the thumb as much as possible. The result was that my arpeggios stayed the same (but incidentally my scales got better). To replace swivelling at the wrist, I pronate my forearm to facilitate passing under or over the thumb (and activate my thumb as much as possible). With this pronation come as raising of the elbow, which in turn drags my forearm outwards. This of course changes the angle of arm and hand in relation to the keyboard. Is this change of angle an issue? It's my upper arm powering the movement and dragging the whole arm outwards, not the forearm causing the wrist to swivel. Am I just replacing one problem with another? This change of angle is causing a few issues itself. When my arm is pulled out to the side I am not ulnarly deviating. However, when I start the arpeggio, I must employ some ulnar deviation in order to connect the first two notes (the alternative being to retain the angle of the arm that occurs when my thumb goes under, but that seems to require my thumb to be right on the edge of the keys and my fingers amongst the black keys). I will be having some lessons with Alan in May on his Bonn workshop, and I'm certain he will sort out the issue, but that's a little way off. Rather than just ignoring the problem until then, I'd like to find a way to tackle it. Any suggestions would be appreciated.