Space shuttle Endeavour begins a kind of farewell tour this week. The shuttle will set off on a cross-country trip to its retirement home, flying from Florida to Los Angeles on the back of a modified jumbo jet.
Along the way, the spaceship will stop off in Houston, home of NASA's Mission Control and, weather permitting, fly over NASA centers and various landmarks in cities that include San Francisco and Sacramento.
This summer we've brought you musical postcards of street performers from around the country. Our "Music Alfresco" series takes us to our last stop: Berkeley, Calif., where we meet guitarist Phillip Rosheger.