This file is in the MIDI format, which is a special format used to trigger digital musical instruments or software. If you have the appropriate resources you can make a simple MIDI file sound very impressive. You can also play it as a stand-alone file, although it will sound somewhat thin and artificial. MIDI files can be useful for simple applications such as ring tones. Perhaps the biggest advantage of the MIDI format is the very low file size.
Hallelujah Chorus: MIDI file (14KB)