MIDI file support for your music playing       Every composition-item page of our catalog includes the audio content of the packaged sheet music in MIDI file format. So, with the help of any MIDI player, you can either listen to the content of your sheet music before to buy it or to play together your computer in a easily manner you will surely enjoy! For example, you can buy a violin and piano sonata to play with your violin, download the corresponding MIDI files, then play with the piano accompaniment performed by your computer. This is very useful for music learning. For any further question, please do not hesitate to contact us. Thank you for your musical interest!