Perhaps best-known for the musical West Side Story, composer Leonard Bernstein was one of the most accomplished and influential musicians of the 20th century. For fifteen years, beginning in 1958, Bernstein attempted to turn the youth of America on to music through a series of televised performances called Leonard Bernstein's Young People's Concerts. Using his own music along with that of Debussy and Mussorgsky, Bernstein spend this episode demonstrating the different modes, including the Dorian mode, the Phrygian mode, and the Lydian mode. Leonard Bernstein's Young People's Concerts: What is a Mode? originally aired on November 23, 1966. ~ Matthew Tobey, Rovi