The 90th episode of "The Baton" highlights the return to the melodic theme composition styles that made John Williams famous in the 1970s and 1980s. With "Harry Potter and the Sorcerer's Stone," Williams creates no less than seven new themes for the main characters and the title stone that causes so much trouble. Host Jeff Commings details all seven themes and their appearances in the score, including the fun Quidditch match and the thrilling chess game. There's also a look at the final piece of music Williams wrote in 2001, a rousing theme for the 2002 Winter Olympics to be held in Salt Lake City, Utah.