in reply to Re^3: listen to a midi keyboard
in thread listen to a midi keyboard

Nonsense. Lilypond isn't exactly pretty, but in my experience with it (years ago), I never had to drop into Scheme to typeset ordinary music.

But to address the OP's question, if you can get at MIDI-format data, there's MIDI to convert it into Perl data structures.

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Re^5: listen to a midi keyboard
by karlgoethebier (Monsignor) on Dec 28, 2013 at 14:49 UTC
    "Lilypond isn't exactly pretty"

    I'm glad that we are d'accord.

    Regards, Karl

    «The Crux of the Biscuit is the Apostrophe»