A GP3 file is used by the musical composition program Guitar Pro 3.
This software is primarily used for guitar, but also works with other stringed instruments (namely the plucked ones) such as the banjo. These files can be played back or printed.
.gp3 File
Extension
Developer:
Arobas Music
File category:
What are gp3 files & how to open them - Guitar Pro 3 Project File
File category:
Developer:
Arobas Music