The Grants Committee has received the following grant proposal for the July/August round.
Before the Committee members vote, we would like to solicit feedback from the Perl
community on the proposal.
Review the proposal below and please comment here by August 26th, 2018.
The Committee members will start the voting process following that.
# Perl as piano sheet music/compiler/synthesizer
- Amount Requested:
Write a piece of piano music in Perl, then compile it with a Perl compiler,
finally synthesize it with a Perl synthesizer. Yes, you can interpret any
piano music however you like with Perl, listen and enjoy it using Perl,
and touch Bach/Beethoven/Brahms/Schumann/Schubert all those great souls through
## Benefits to the Perl Community
There's literally not once that I went to the explore page of github and
didn't see a project that's used to write music programmatically, music
and programming languages, they are such a combination and there's a lot
of interest of them among software developers, unlike natural
languages, both of them are precise, but while it may take a quite while to
appreciate a programming language, music could be feeled right now and instantly
grab one's mind, by providing a direct link from Perl to piano music,
one can listen to a beautiful piano piece and get impressed by Perl right
away, thus contributing to the attractiveness of Perl overall and potentially
get/keep new/old developers to Perl.
1. A piano sheet music format that's:
2. valid Perl code.
3. able to describe arbitrarily complex piano piece.
4. a natural and close reflection of a real piano sheet music.
2. A compiler written in Perl that compiles any piano piece written in this
format as MIDI.
3. A synthesizer written in XS that's:
1. targeted to a freely available piano sample library so that there's no
barrier for anybody to use.
2. specialized in piano synthesizing so that efficiency is maximized,
only two seconds are required to render the entire
[Brahms Op.79 No.2](#brahms-op79n2-vid) on a six years old laptop.
3. required for being self contained, you can of course use any other
synthesizer you like better or a commercially one you've purchased but that's
## Project Details
It's a complete pipeline to produce piano music. The first part is the format
of the sheet music/source code, just like you don't write a program in machine
instructions but in a high level programming language, you don't write a
piece of piano music in MIDI instructions but in a much more natural way similar
to how you would read a piece of piano sheet music, you can have a look at
the source code of [Brahms Op.79 No.2](#brahms-op79n2-src) to get the hang of it.
Then the source is compiled by the compiler, which is the second part, to produce
binary instructions/MIDI for the synthesizer, it handles expansions, event
ordering, accidentals, key signatures, dynamic tempos, to name a few.
The third and last part is the synthesizer producing sound samples from data
generated by the compiler, which could then be played directly or encoded
It's not a program to just make sounds, or play some notes/chords, it's designed
from ground up to interpret the most difficult/complex piano music, and it's
proven, I have already interpreted twelve pieces of piano music, most of which are
non-trivial classical pieces, and can be viewed at ["youtube"](#youtube).
1. Split this project out into a stand alone git repository, rebase all
related commits and write meaningful commit messages.
2. Write detailed documentation, especially for the music source format.
3. Upload the first release to CPAN, with source demos for three piano
4. Read MIDI specification throughly, I'm using a customized binary format
that's very similar to MIDI at the moment, but MIDI is inevitable since
it provides the freedom to use arbitrary synthesizer.
5. Implement MIDI output, and upload the second release to CPAN with
MIDI files of those three demos.
6. Depending on community feedback, implement most wanted features or
interpret more pieces.
## Project Schedule
This project will take six months, I can start working on it
after it's approved.
## Completeness Criteria
A release uploaded to CPAN with all deliverables accomplished.
I'm creative and experienced in Perl, I created
[a new Linux distribution](#rslinux)
with Perl, I wrote [the first reference counting CPAN client](#app-rs), I invented
[a new object system for Perl with no code](#dot).
I played piano for three years, I've already received three copyright
infringement claims uploading piano music I programmed and synthesized with
this project to ["youtube"](#youtube), claiming that it's actually done by
some professional piano players.