Bill Lowrey (born January 29, 1963) is an American musical entertainer and banjoist from California. He has been a featured performer or headliner at a variety of jazz festivals around the U.S. for over fifteen years. Lowrey has established himself in the four-string banjo community as one of its key figures as compared to the likes of Sean Moyses, Steve Peterson, and Buddy Wachter.

Can we draw the following conclusion?
Bill Lowrey plays a 4 stringed instrument.
Yes