Loper · Sound & music

Open .musicxml files on your Mac.

.musicxml

Sheet music exchanged between Sibelius, Dorico, MuseScore and Finale: parts, measures and notes.

Loper is a free, minimal editor for macOS that opens MusicXML score instantly and colors every part of the file, so you find the value you need at a glance and can fix it right there. No IDE, no project to load, no gray wall of text.

theme.musicxml opened in Loper: MusicXML score with color-coded XML
Show the file as text
<?xml version="1.0" encoding="UTF-8"?><score-partwise version="4.0">  <part-list>    <score-part id="P1"><part-name>Cello</part-name></score-part>  </part-list>  <part id="P1">    <measure number="1">      <attributes><divisions>1</divisions><time><beats>4</beats><beat-type>4</beat-type></time></attributes>      <note><pitch><step>D</step><octave>3</octave></pitch><duration>2</duration><type>half</type></note>      <note><pitch><step>A</step><octave>3</octave></pitch><duration>2</duration><type>half</type></note>    </measure>  </part></score-partwise>

How to open .musicxml files

  1. Download Loper (free, Apple silicon, signed and notarized) and move it to Applications.
  2. Double-click your .musicxml file, drag it onto the Loper window, or right-click it and choose Open With › Loper.
  3. Want every .musicxml file to open in Loper? Choose Loper › Make Loper the Default Editor….