So, they say that a violin is one of the hardest instruments to learn to play because it’s all in getting a single string (for one thing) to sound so classically sweet. Now, you know a toddler can ...

Following is a transcription of the video. Narrator: In 2017, a single violin bow sold at auction for $690,000. You can buy a beginner's bow for less than $50, but a top-rate professional bow can ...