1. Stradivari Viola
Our ultimate winner of the most expensive instruments in the world is produced by Antonio Stradivari. The heritage of this famous artist is worth billions, with this viola as the most expensive piece. The reason for the staggering price of 45 million dollars is the rarity: only 10 of his violas are known to be still preserved. This one has the best quality and level of preservation, even though it is 300 years old. It was sold at an auction in 2014. This is the winner of our list of Most Expensive Musical Instruments in the World.