Here are four arts and culture videos from public broadcasting partners around the nation.

PBS' "Violin Masters: Two Gentlemen of Cremona" tells the story of Antonio Stradivariand and lesser known violin creator Giuseppe Guarneri del Gesuthese and why their stringed instruments are worth millions of dollars to musicians and collectors:

Watch Violin Masters: Two Gentlemen of Cremona (Trailer) on PBS. See more from PBS Arts.

MN Original profiles photographer Chris Faust: "With photographs rooted in tradition and nostalgia, photographer Chris Faust still uses a wet darkroom to process his images. A personal epiphany led him away from a career in medical photography, and Faust started making personal photographs using a pinhole camera. Now most well known for his landscapes and night photography, his images evoke a kind of creative memory in viewers."

PBS' Idea Channel asks, "Is Instagram Revolutionizing Photography?"

Watch Idea Channel: Is Instagram Revolutionizing Photography? on PBS. See more from Idea Channel.

Tavis Smiley talks to author Judy Blume: "The award-winning and controversial author discusses book censorship in the Internet age, how she can continue to connect with children as she grows older and what's next on her agenda"

Watch Author Judy Blume on PBS. See more from Tavis Smiley.