music demo

app.py

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+import os
+import io
+
+import streamlit as st
+from PIL import Image
+
+import pretty_midi
+import music21
+import note_seq
+from scipy.io import wavfile
+
+import numpy as np
+
+st.title('Music Demo')
+st.markdown('This example need a .xml music file as input and show partiture, piano roll and a simply wav. You can generate it from MuseScore or similar software.')
+
+example_1 = st.button('Test Example')
+
+uploaded_file = st.file_uploader("Choose a .xml music file", type='xml')
+
+if uploaded_file is not None or example_1:
+    if uploaded_file is not None:
+        # save file
+        with open(os.path.join(os.getcwd(), uploaded_file.name), "wb") as f:
+            f.write(uploaded_file.getbuffer())
+        file_path = os.path.join(os.getcwd(), uploaded_file.name)
+    else:
+        file_path = 'examples/test.xml'
+
+    # Show partiture with music21
+    music = music21.converter.parse(file_path)
+    streaming_partiture = str(music.write('lily.png'))
+    image = Image.open(streaming_partiture)
+    st.text('Partiture')
+    st.image(image)
+
+    # save to mid
+    midi_path = file_path + '.mid'
+    music.write('midi', fp=midi_path)
+
+    # plot piano rol
+    unconditional_ns = note_seq.midi_file_to_note_sequence(midi_path)
+    piano_roll = note_seq.plot_sequence(unconditional_ns, show_figure=False)
+    st.text('Piano Roll')
+    st.bokeh_chart(piano_roll, use_container_width=True)
+
+    # generate wav
+    with st.spinner(f"Sinthezizing to wav"):
+        midi_data = pretty_midi.PrettyMIDI(midi_path)
+        audio_data = midi_data.synthesize()
+        audio_data = np.int16(
+            audio_data / np.max(np.abs(audio_data)) * 32767 * 0.9
+        )  # -- Normalize for 16 bit audio https://github.com/jkanner/streamlit-audio/blob/main/helper.py
+        virtualfile = io.BytesIO()
+        wavfile.write(virtualfile, 44100, audio_data)
+
+    st.audio(virtualfile)
+    st.markdown("Download the audio by right-clicking on the media player")

examples/test.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE score-partwise PUBLIC "-//Recordare//DTD MusicXML 3.1 Partwise//EN" "http://www.musicxml.org/dtds/partwise.dtd">
+<score-partwise version="3.1">
+  <work>
+    <work-title>Title</work-title>
+    </work>
+  <identification>
+    <creator type="composer">Composer</creator>
+    <encoding>
+      <software>MuseScore 3.6.2</software>
+      <encoding-date>2022-03-12</encoding-date>
+      <supports element="accidental" type="yes"/>
+      <supports element="beam" type="yes"/>
+      <supports element="print" attribute="new-page" type="yes" value="yes"/>
+      <supports element="print" attribute="new-system" type="yes" value="yes"/>
+      <supports element="stem" type="yes"/>
+      </encoding>
+    </identification>
+  <defaults>
+    <scaling>
+      <millimeters>6.99911</millimeters>
+      <tenths>40</tenths>
+      </scaling>
+    <page-layout>
+      <page-height>1696.94</page-height>
+      <page-width>1200.48</page-width>
+      <page-margins type="even">
+        <left-margin>85.7252</left-margin>
+        <right-margin>85.7252</right-margin>
+        <top-margin>85.7252</top-margin>
+        <bottom-margin>85.7252</bottom-margin>
+        </page-margins>
+      <page-margins type="odd">
+        <left-margin>85.7252</left-margin>
+        <right-margin>85.7252</right-margin>
+        <top-margin>85.7252</top-margin>
+        <bottom-margin>85.7252</bottom-margin>
+        </page-margins>
+      </page-layout>
+    <word-font font-family="Edwin" font-size="10"/>
+    <lyric-font font-family="Edwin" font-size="10"/>
+    </defaults>
+  <part-list>
+    <score-part id="P1">
+      <part-name>Piano</part-name>
+      <part-abbreviation>Pno.</part-abbreviation>
+      <score-instrument id="P1-I1">
+        <instrument-name>Piano</instrument-name>
+        </score-instrument>
+      <midi-device id="P1-I1" port="1"></midi-device>
+      <midi-instrument id="P1-I1">
+        <midi-channel>1</midi-channel>
+        <midi-program>1</midi-program>
+        <volume>78.7402</volume>
+        <pan>0</pan>
+        </midi-instrument>
+      </score-part>
+    </part-list>
+  <part id="P1">
+    <measure number="1" width="587.65">
+      <print>
+        <system-layout>
+          <system-margins>
+            <left-margin>50.00</left-margin>
+            <right-margin>0.00</right-margin>
+            </system-margins>
+          <top-system-distance>70.00</top-system-distance>
+          </system-layout>
+        </print>
+      <attributes>
+        <divisions>2</divisions>
+        <key>
+          <fifths>0</fifths>
+          </key>
+        <time>
+          <beats>4</beats>
+          <beat-type>4</beat-type>
+          </time>
+        <clef>
+          <sign>G</sign>
+          <line>2</line>
+          </clef>
+        </attributes>
+      <note default-x="73.72" default-y="-15.00">
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+          </pitch>
+        <duration>2</duration>
+        <voice>1</voice>
+        <type>quarter</type>
+        <stem>down</stem>
+        <lyric number="1" default-x="6.50" default-y="-42.97" relative-y="-30.00">
+          <syllabic>single</syllabic>
+          <text>when</text>
+          </lyric>
+        </note>
+      <note default-x="194.22" default-y="-15.00">
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+          </pitch>
+        <duration>2</duration>
+        <voice>1</voice>
+        <type>quarter</type>
+        <stem>down</stem>
+        <lyric number="1" default-x="6.50" default-y="-42.97" relative-y="-30.00">
+          <syllabic>single</syllabic>
+          <text>the</text>
+          </lyric>
+        </note>
+      <note default-x="314.72" default-y="-15.00">
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+          </pitch>
+        <duration>1</duration>
+        <voice>1</voice>
+        <type>eighth</type>
+        <stem>down</stem>
+        <beam number="1">begin</beam>
+        <lyric number="1" default-x="6.50" default-y="-42.97" relative-y="-30.00">
+          <syllabic>single</syllabic>
+          <text>sun</text>
+          </lyric>
+        </note>
+      <note default-x="390.04" default-y="-15.00">
+        <pitch>
+          <step>C</step>
+          <octave>5</octave>
+          </pitch>
+        <duration>1</duration>
+        <voice>1</voice>
+        <type>eighth</type>
+        <stem>down</stem>
+        <beam number="1">end</beam>
+        <lyric number="1" default-x="6.50" default-y="-42.97" relative-y="-30.00">
+          <syllabic>begin</syllabic>
+          <text>li</text>
+          </lyric>
+        </note>
+      <note default-x="465.35" default-y="-30.00">
+        <pitch>
+          <step>G</step>
+          <octave>4</octave>
+          </pitch>
+        <duration>2</duration>
+        <voice>1</voice>
+        <type>quarter</type>
+        <stem>up</stem>
+        <lyric number="1" default-x="6.50" default-y="-42.97" relative-y="-30.00">
+          <syllabic>end</syllabic>
+          <text>ght</text>
+          </lyric>
+        </note>
+      </measure>
+    <measure number="2" width="391.38">
+      <note default-x="26.70" default-y="-25.00">
+        <pitch>
+          <step>A</step>
+          <octave>4</octave>
+          </pitch>
+        <duration>4</duration>
+        <voice>1</voice>
+        <type>half</type>
+        <stem>up</stem>
+        <lyric number="1" default-x="6.50" default-y="-42.97" relative-y="-30.00">
+          <syllabic>single</syllabic>
+          <text>now</text>
+          </lyric>
+        </note>
+      <note>
+        <rest/>
+        <duration>4</duration>
+        <voice>1</voice>
+        <type>half</type>
+        </note>
+      <barline location="right">
+        <bar-style>light-heavy</bar-style>
+        </barline>
+      </measure>
+    </part>
+  </score-partwise>

packages.txt

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+lilypond

requirements.txt

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+streamlit
+
+music21
+pretty_midi
+note_seq
+bokeh==2.4.1
+
+scipy
+numpy