Sounds like your grandfather is very talented, but there are literally thousands of musical instruments as each culture has many unique instruments. There are several categories of instruments including:
Cordophones - instruments whose sound is produced by the vibration of strings
Idiophones - percussion instruments whose vibrating material is an elastic substance, such as metal or wood.
Membranophones - percussion instruments whose vibrating material is a membrane, such as the tympani
Aerophones - wind instruments and the vocal cords
Electrophones - instruments which synthesize their sounds electronically.
And under each of these classes are thousands of instruments. I don't doubt that he can play instruments from all these classes, but to say he plays every instrument there is, would be an exaggeration. I know several music majors and they play numerous instruments from all classes, but as talented as they are I know its impossible to play every instrument there is in the world.
Cordophones - instruments whose sound is produced by the vibration of strings
Idiophones - percussion instruments whose vibrating material is an elastic substance, such as metal or wood.
Membranophones - percussion instruments whose vibrating material is a membrane, such as the tympani
Aerophones - wind instruments and the vocal cords
Electrophones - instruments which synthesize their sounds electronically.
And under each of these classes are thousands of instruments. I don't doubt that he can play instruments from all these classes, but to say he plays every instrument there is, would be an exaggeration. I know several music majors and they play numerous instruments from all classes, but as talented as they are I know its impossible to play every instrument there is in the world.