B.B. King has opened at 47 U2 concerts.

B.B. King Website

Nicknamed “The King of Blues,” B.B. King was voted No. 6 by Rolling Stone magazine as one of the 100 greatest guitarists of all time.  He recorded “When Love Comes to Town” with U2 in 1988 for their Rattle and Hum record. In June 2011, he played at the Glastonbury festival in the UK and the following year performed for President Barack Obama and his wife Michelle at their blues celebration concert “In Performance at the White House: Red, White, and Blues.” The Mississippi-born Grammy winner has played an astonishing 15,000 shows throughout his entire career.