What is MIME type "application/vnd.yamaha.openscoreformat"?

A MIME type is a string that tells browsers and other tools how to handle a particular kind of file.

The MIME type application/vnd.yamaha.openscoreformat is reserved for Yamaha’s digital score files. It marks documents that store musical scores in a structured, text-based format.

Files with this type typically come with the OSF extension. The file contains musical instructions such as note timing, pitch, dynamics, and layout details.

Main Use: Holding digital music scores for editing, display, and playback in Yamaha systems.
Functionality: Enabling software to correctly interpret and render complex musical notation.
Context: Integrated into Yamaha applications and products to ensure smooth data exchange between devices.

This structured file format facilitates both human readability (for manual editing) and machine processing (for automated performance or score rendering). For further technical insights, visit the Yamaha official website.

Associated file extensions

.osf

Usage Examples

HTTP Header

When serving content with this MIME type, set the Content-Type header:


    Content-Type: application/vnd.yamaha.openscoreformat

HTML

In HTML, you can specify the MIME type in various elements:


    <a href="file.dat" type="application/vnd.yamaha.openscoreformat">Download file</a>

Server-side (Node.js)

Setting the Content-Type header in Node.js:


    const http = require('http');
    
    http.createServer((req, res) => {
      res.setHeader('Content-Type', 'application/vnd.yamaha.openscoreformat');
      res.end('Content here');
    }).listen(3000);

Associated file extensions

.osf

FAQ

What is a MIME type?

A MIME (Multipurpose Internet Mail Extensions) type is a standard that indicates the nature and format of a document, file, or assortment of bytes. MIME types are defined and standardized in IETF's RFC 6838.

MIME types are important because they help browsers and servers understand how to process a file. When a browser receives a file from a server, it uses the MIME type to determine how to display or handle the content, whether it's an image to display, a PDF to open in a viewer, or a video to play.

MIME types consist of a type and a subtype, separated by a slash (e.g., text/html, image/jpeg, application/pdf). Some MIME types also include optional parameters.

How do I find the MIME type for a file?

You can check the file extension or use a file identification tool such as file --mime-type on the command line. Many programming languages also provide libraries to detect MIME types.

Why are multiple MIME types listed for one extension?

Different applications and historical conventions may use alternative MIME identifiers for the same kind of file. Showing them all helps ensure compatibility across systems.