I'd stay away from using Data::Dumper as a persitence tool, even though i recently posted some code that did just that. As was pointed out in that thread, how about using Storable or YAML instead?

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)