Thanks to all who responded about regulating the celesta. I passed all the relevant information (mostly confirming that it is a crude instrument and not to expect too much from it, but regulation is possible) along to the management of the symphony. They will decide what to do. I really didn't want to get into this situation where, I suspect, expectations may be too high and I have no practical experience on which to fall back. Your help and encouragement is much appreciated. Joel
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