The PTB file extension is used to identify files created and used by Power Tab, program used to create and edit tablatures.
Tabs are forms of musical notation, similar to scores, but specific to a particular instrument, especially strings. It was created primarily for fretted stringed musical instruments.
It is done to indicate the position of the fingers when playing the instrument. Some of the most popular tablature programs are:
These applications use an open source tablature editor and offer features such as editing, punctuation, import and export of files. Some of these tools also have built-in extensions including a basic MIDI editor, chord tracer, and metronome.
Files with a PTB extension are used to save guitar and bass tablatures and are also used as printable music sheets.
To view and manage these types of files, it may require the user to install one of the programs referenced above.
For more general information about files, file extensions and registry you can read one of the following articles:
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