The flamboyant pop sensation Lady Gaga talks about the creative process behind her single "Applause." She explains how being forced to slow down by a hip injury actually helped her to focus, about working with famous names from the world of art, and exactly how much it means to her to be performing again for her adoring fans.

The two filmmakers who created Rumble talk about how Native American musicians like Link Wray were idols in the eyes of famous performers, but totally unknown to the general public.