Conversation so far:
who is the violinist on dancing with the stars 2017
In 2017, violinist Lindsey Stirling was one of the celebrities to compete on season 25 of Dancing with the Stars.
what are lindsay stirling's youtube numbers
As of September 10, 2019, Lindsey Stirling's YouTube channel exceeded 12 million subscribers and over 2.7 billion total views.

Question: How many albums has the violinist released?
Self-contained rewrite: How many albums has Lindasy Stirling released?