Move the clip forward, to approximately 1:34, to see Robert Gupta - at the time the youngest member of the Los Angeles Philharmonic Orchestra - work with Nathaniel Ayers.
In this scene, Nathaniel watches Robert and Joanne Pearce-Martin (principal keyboardist for the LA Phil) as they finish playing a duet. Immediately after its conclusion, Robert gives Nathaniel tips on violin-playing technique.
Steve Lopez, Nathaniel's friend and author of a book about him, narrates this video clip from the LA Times online.
Video clip online, courtesy Los Angeles Times' Channel at YouTube. Copyright, LA Times, all rights reserved. Clip provided here as fair use for educational purposes.