Today, jazz is alive and well. Pop groups such as Squirrel Nut Zippers have helped jazz reenter the main pop scene. There are many artists who continue the tradition left to them by the likes of Louis Armstrong, Charlie Parker, Lester Young, and John Coltrane. As jazz musicians of the 90's have looked back to the heroes of the past, particularily from the bop era, a new generation of jazz stars has emerged. Many of these artists aren't interested in creating a new genre of jazz, but rather they want to support a revival of an earlier jazz era. The main difference between the current jazz stars and those of yesteryear are that today's jazz stars are mainly the trained at formal music schools such as Berkelee. Some of today's stars include Joshua Redman, Terrance Blanchard, and Joe Lovano. One of the most influential jazz musicians today, and a leader in the jazz world through his work at the Lincoln center, is Wynton Marsalis.