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

Idea Channel asks, "Is Dub Step the New Musical Avant-Garde?"
"While some people may hear noise, some hear amazing musical genius in the creativity of Dubstep. There is a long history of avant garde musicians and thinkers promoting the concept of noise and non-instrumental sounds as music, much to the horror of their audience. But over the past century, changes in technology and music genres may have changed attitudes to accept these once-fringe music genres."

Watch Idea Channel: Is Dub Step the New Musical Avant-Garde? on PBS. See more from Idea Channel.

Nine Network's "Living St. Louis" profiles Mariachi Los Compadres, the only Mariachi band in the St. Louis area:

Watch Mariachi on PBS. See more from Living St. Louis.

WHHY's "Friday Arts" looks at the Mural Arts Program, which partners with local social and cultural organizations to bring to light the rising issue of homelessness:

Watch Friday Arts for August 2012 on PBS. See more from Friday Arts.

NYC-ARTS looks back at 75 years of Tanglewood. "Located in the Berkshires of Massachusetts, Tanglewood is the summer home of the Boston Symphony Orchestra. It's been called America's Salzburg and the orchestra has performed here since 1937.

Watch Profile: Tanglewood on PBS. See more from NYC-ARTS.