IFR sheet music library and tool for converting your own sheets

(This is a continuation of Tool for converting sheet music to IFR notation)

For the past few years I have been developing a tool that converts conventional sheet music to IFR notation. Currently the output of the tool looks like this:

On this website: http://www.integerbook.com/ you can convert sheets from my personal library into IFR notation and you can also convert your own sheets by uploading them.

The following options are currently available:

add lyrics:

color the notes according to the circle of fifths:

show the chord tones:

analyze the song from the perspective of the (natural) minor scale:

view only the chord tones:

There is also an option to visualise bass lines:

When you are converting your own sheet, the format should be .musicxml. You can control which note is recognised as the “1” by setting the key of the song in the musicxml file.

I hope this is useful to some of you here. Feedback and questions are very welcome and donations can be made here.


I’m currently learning Bach’s Prelude No 1 in C major, BWV 846, on piano, and doing a bit of IFR analysis as well. How easy would it be to get this into a form where I could your tool to generate an IFR version?

I’m not familiar with musicxml, but am quite tech savvy. I have an aging laptop running Ubuntu, where might I start, or is it a lost cause on my outdated technology?

I’ve had a look on your website, and looks like I need a .musicxml file for the music. I’m not a subscriber for MuseScore, are there any other such sites which might allow me get hold of one?

I have a file from mscorelib.com of (what I think is) the music (WT1_1A.mxl) and gave it as an input to your converter. It seems to have only plotted the treble (clef) notes, which is very useful, but not the bass notes.

I can’t read the file (I’ll try on my laptop later), but I wonder if your software is confused by how the bass part is written (?). I think, in the usual music score, it’s written in two voices (bass and tenor voice maybe), with the tenor voice starting with a short rest. The first note in the bass clef is written as a semiquaver/sixteenth note rest on top of a C note minim/half note.

It is very easy. The only thing you need is a musicxml file of the score you want to convert.

Since the code is running on a server, the only thing your laptop needs to do is have internet access. so no further requirements on your laptop.

on google you should also be able to find some alternatives. There is also this initiative that is trying to make the sheets musescore freely available for everyone: https://github.com/LibreScore/app-librescore which you might want to check out.

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The program is currently ignoring the notes in the bass clef. The reason for this is that many sheets have some kind of accompaniment in the bass clef that I prefer not to have in the output. I might make an option in the future for selecting whether you want to plot the bass clef or not.

For now, I think this is what you are looking for right?
Prelude_I_in_C_major_BWV_846_-_Well_Tempered_Clavier_First_Book.mxl.pdf (233.1 KB)

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I think it would be a useful option to have.

Yes indeed, thank you.