This code needs comments ... bad! Trying to understand what is going is too much to ask someone without detailed explanation of why you made this sooo complicated. If i had to guess ... and i have to, change line 937 from this:

warn "$_->{'n_typ'}";
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to this:

warn $_{'n_typ'};
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Because if i am guessing correctly, $_ in this context is not a hash reference, but the hash itself. If this is not the problem, then just wait - hopefully someone else with more free time on their hands will be spot your error. In the meantime, think about design - code this complex needs it. :)

jeffa

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)