Béla Fleck is often considered the world’s greatest banjo player. The sixteen-time Grammy winner has earned awards under the headings of jazz, world music, classical, folk, bluegrass, pop instrumental, gospel and more, and has been nominated in more categories than any instrumentalist in Grammy history. Fleck will perform his Concerto for Banjo and Orchestra No. 3 with the Colorado Symphony at Boettcher Hall this weekend, with Brett Mitchell conducting.