Please don't miss your recital! And try not to be too hard on yourself. Both my daughter and I play cello - I learnt as a youngster and came back to it as an adult when she started (she was 8 years old then) - I was trying to help her and play duets with her and realised how terribly I had been missing it. She had lessons through school to start with (I actually didn't think she'd be able to play a string instrument as she couldn't sing in tune to save her life, but she really wanted to take up the cello, so school lessons were a good start as they cost nothing and she got the instrument for a very cheap fee). Her first teacher was fabulous, a very nurturing and inspirational woman, but not a cello first study (she is primarily a violinist but was made to teach cello by the instrumental music service as her third instrument) - I can't fault the grounding that my daughter got and I will always be grateful to this teacher, but she knew her limitations cello-wise and advised us to move on to a private teacher after a couple of years. It became quickly obvious with her second teacher (who is also an absolute treasure) that there were some problems with daughter's technique - hand sloping backwards as a violinist would so not enough weight on the fourth finger, bow hold needed some work, not a straight line from elbow through to hand......sound familiar?
After a year of my daughter taking private lessons I was so impressed with her teacher's patience, enthusiasm and her eye for detail that I asked if she would take me on as well........best thing I ever did BUT boy oh boy did I have some nasty little holes in my technique. I still bow up on the fingerboard, vibrato was very fast and tight (and got worse when I was nervous.....it still does if I don't watch it!

), thumb gripping too hard with my left hand, my hand sloped backwards too - I could go on and on, but I think you may be getting the picture here.
What I am trying to say in a roundabout way is don't be too disheartened by all the things that your teacher has highlighted as issues with your technique - when you switch teachers you are bound to find that each teacher has their own ideas about how things should be done and new issues will be uncovered. I suspect your teacher may be trying to help you rather too quickly and hasn't realised how overwhelming it can be to be confronted all at once with a myriad of things that need fixing.

I wonder if it may be overwhelming for a teacher to take on a new student and see all of those issues - perhaps it's hard to isolate them one at a time? It's very likely also if you haven't had private lessons for a while that you may have grown a few bad habits without realising it - teachers are great for pointing out things you didn't even know you were doing.
What this DOESN'T mean is that you are a bad cellist. Truly. And you don't have to fix your technical issues in a few lessons - it takes time to unlearn and relearn those things which have become ingrained. My daughter has a great hand shape now and the line of her arm is much better - but her thumb position is a work in progress

. That's fine. I know she'll get there in the end with cello teacher's constant and gentle reminders, as will I (I really thought I had "arrived" the other day when teacher prodded my elbow with her bow to remind me to lift it up, just as she does with my daughter....hee, hee

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It is not good that you are a little scared of your teacher - a healthy respect doesn't hurt and helps to keep you on track, but you should be able to laugh with them too and ask questions without feeling like you are going to be in trouble for doing this. I don't know your teacher and I can't say whether that kind of relationship can develop over time - I would encourage you to let them know that you are feeling overwhelmed if at all possible, as it is clearly affecting your playing and your self esteem - not good!! I would hate for my daughter (she's 12 now) to have a teacher with whom she felt so uncomfortable. Have you talked to your parents about how you are feeling? They may be able to help you talk to the teacher about these things - or if things aren't getting better, perhaps even help you find someone else (I realise this may be hard as it was obviously hard to find a teacher in the first place). I calculate you are about 15 (sorry if I am wrong!) and I know at that age I would have found it hard to work this sort of stuff out with my teachers. A good teacher will listen and recognise that they are dealing with a young person as well as shaping a cellist - and learning is best when there is a good relationship on both sides.
I can definitely picture the hypermobility issue - my daughter has very flexible joints too (she is half Chinese) and used to do this. It's actually not an uncommon problem from what I have seen of the other kids who play cello in her orchestras. Don't bother with the squeezy ball exercises - the best way to strengthen fingers is technical exercises! (speaking from a GP perspective here and with a some OT and physio knowledge too, as well as having dealt with this issue with daughter and with myself) Don't know what your teacher has you doing, and don't want to interfere with this, but mine gets us going with Feuillard (I love Feuillard, it has so much good stuff in it, especially left hand things). Plus if you are very mindful of what you are doing and just keep thinking about how you are holding your fingers plus being stern with yourself when you catch yourself hyperextending, you will eventually break the habit, trust me. I won't say hyperextension is always bad - you have to use it when you are barring a fifth across two strings, for example, but you need to be able to choose when you are going to use it. Having an arched finger makes it easier to clear the strings for fast passages and for double stopping (well, for some double stopping....

....). It is perfectly OK to ask your teacher to explain why you have to do something a certain way, incidentally - I do this often and it helps me work on a particular skill if I know where I am heading with it.
I think you should give yourself a very large pat on the back for working so hard on your problem areas - you are getting better! That tells me immediately that you are doing good work and that you care about your cello playing a great deal. Be kind to yourself, give yourself time to sort this stuff out, talk to your teacher and focus on what is getting better rather than all the things you still have to work on and I promise it will help you feel better.
Wolfnotes (ah technique, a never ending story....

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