Just a thought runner50 - is the APC being used with the 'MEMORY OFF'? if it is, then the rhythm will of course stop if all keys in the Left hand are released. I could be talking through my hat here !

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Willum
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Willum

After silence, that which comes nearest to expressing the inexpressible is Music.
Aldous Huxley
( especially when the music is played on a KN7000....)