(AP Photo/ Anonymous)
Comedian Bill Cosby, right, and singer-guitarist B.B. King do a duet Friday,July 3, 1981 at New York's Carnegie Hall during a blues concert which Cosby hosted (AP Photo/ RAY STUBBLEBINE)
B.B. King (with guitar), black blues singer, performs for the inmates of Cook County (Chicago) Jail in Chicago, Wednesday, March 9, 1972. (AP Photo/ Charles Knoblock)
A group of prisoners at the Dade County stockade listen to B.B. King (left) as entertained them outside their cells, Sept. 23, 1971 in Miami, Fla. (AP Photo)
This is a photo of Bobby Bland and B.B. King performing in November, 1982. (AP Photo/ XNBG AD)
B.B. King plays it cool at the Kool Jazz Festival, July 3, 1983 at Avery Fisher Hall in Lincoln Center for the Performing Arts in New York. (AP Photo/ RENE PEREZ)
B.B. King performing in October 1980. (AP Photo) (AP Photo)
Blues king B.B. King stands with his victrola-shaped trophy he received Wednesday night, February 24, 1982 during the 24th annual Grammy Awards presentations in Los Angeles. (AP Photo/ REED SAXON)
Blues musician B.B. King played to a packed auditorium of residents and press at the Massachusetts Correctional Institution in Norfolk, Mass., Monday, April 3, 1978. (AP Photo/ Anonymous)
Blues singer-composer-guitarist B.B. King played to a packed crowd, Monday, April 4, 1978 at the Massachusetts Correctional Institution at Norfolk, Mass. (AP Photo/ Anonymous)
Blues Guitarist B.B. King, July 8, 1978. (AP Photo/ XJFM)
This is an undated photo of musician B.B. King. (AP Photo/ XJM)
B.B. King gestures to the crowd before receiving an honorary Doctor of Music degree during Brown University's 239th Commencement in Providence, R.I., Sunday, May 27, 2007. (AP Photo/ STEW MILNE)
Jazz guitarist B.B. King performs before an enthusiastic audience, Friday, June 28, 1986 at Avery Fisher Hall in New York. (AP Photo/ Rick Maiman)
Blues musician B.B King plants a kiss on a plaque presented to him during a ceremony honoring King with a star on the Hollywood Walk of Fame (AP Photo/ NICK UT)
Legendary blues entertainer B.B. King signs copies of his combined new book and CD collection ''The B.B. King Treasures,'' in New York, Tuesday, Nov. 29, 2005. (AP Photo/ BEBETO MATTHEWS)
Blues legend B.B. King, holding his guitar "Lucille," reacts as the neon sign for his New York restaurant and club arrives in Times Square, Thursday afternoon May 25, 2000. (AP Photo/ RICHARD DREW)
US. Jazz guitarist B.B. King sings during his performance on stage in the Stravinski hall during the 34th Montreux Jazz Festival in Montreux, Switzerland (AP Photo/ MARTIAL TREZZINI)
Blues artist B.B. King performs at the Grand Sierra Resort and Casino in Reno, Nev., on Friday, Oct. 26, 2007. (AP Photo/ KEVIN CLIFFORD)
Media and visitors tour the B.B. King Museum and Delta Interpretive Center during a media day Thursday, Sept. 11, 2008 in Indianola, Miss. (AP Photo/ MATTHEW S. GUNBY)
B.B. King performs at "The Grammy Nominations Concert Live" in Los Angeles on Wednesday Dec. 3, 2008. (AP Photo/ Chris Pizzello)
Blue great B.B. King plays his guitar ''Lucille'' at a special performance at the opening of his new club, B.B. King's Blues Club, in Los Angeles, Tuesday, Sept. 20, 1994. (AP Photo/ Tara Farrell)
B. B. King holds one of his favorite ladies, his guitar Lucille, in 1996. (AP Photo/ Isaac Sutton)
B.B. King greets a crowd of media and fans before answering questions during a media tour of the B.B. King Museum and Delta Interpretive Center Thursday, Sept. 11, 2008 (AP Photo/ MATTHEW S. GUNBY)
B.B. King poses backstage with his award for Best Traditional Blues Album for "One Kind Favor" at the 51st Annual Grammy Awards on Sunday, Feb. 8, 2009, in Los Angeles. (AP Photo/ Matt Sayles)
President Barack Obama is pictured on stage with musician B.B. King, members of the band Maroon 5, and Santa Claus at the lighting of the National Christmas Tree (AP Photo/ Charles Dharapak)
In this Aug. 22, 2012 photograph, an 86-year-old B.B. King thrills a crowd of several hundred people at the 32nd annual B.B. King Homecoming (AP Photo/ Rogelio V. Solis)
FILE - In this Aug. 8, 2013 file photo, Blues music legend B.B. King performs on Frampton’s Guitar Circus 2013 Tour at Pier Six Pavilion, in Baltimore. (AP Photo/ Owen Sweeney)
B.B. King performs in concert at the Tennessee Theater, Tuesday, May 27, 2014 in Knoxville, Tenn. (AP Photo/ Wade Payne)
Close-up of Blues guitarist B.B. King in 1987. (AP Photo) (AP Photo/ XJFM)
Bluesman extraordinaire, B.B. King, is set for a concert, Wednesday, December 7 in UCLA’s Royce Hall at 8:30 p.m. (AP Photo/ XJFM)
Close-up of Blues guitarist B.B. King in 1987. (AP Photo)
FILE - In this April 21, 1980 file photo, B.B. King, left, and an accompanist perform during the opening of the 1980 New Orleans Jazz and Heritage Festival. (AP Photo/ XJM DK**NY** **NY**PH **NY** CD*)
Blues musician B.B. King, left, James Cotton, center, and Muddy Waters perform together at radio city music hall in New York on Friday, June 29, 1979. (AP Photo/ Perez)
B.B. King live in concert at The Kool Jazz Festival in New York, NY on July 2, 1983. (AP Photo/ CARLOS RENE PEREZ)
B.B. King live in concert at The Kool Jazz Festival in New York, NY on July 2, 1983. (AP Photo/ Carlos Rene Perez)
Renowned blues artist B.B. King (left) reacts as he is hooded while receiving the Honorary Degree of Doctor of Music during commencement ceremonies for the Berklee College of Music (AP Photo/ Sean Kardon)
This is an undated photo of musician B.B. King performing. (AP Photo/ XJM)