Cedella Booker, 81; mother of Bob Marley who wrote two biographies of him and recorded two albums (April 8)

Ozzie Cadena, 83; record producer recorded jazz giants for the Savoy label (April 9)

George T. Butler Jr., 76; influential jazz A & R man and record producer (April 9)

Joe Feeney, 76; an Irish American tenor who was one of the featured performers on Lawrence Welk's television programs (April 16)

Danny Federici, 58; a keyboard player who was one of the original members of Bruce Springsteen's E Street Band (April 17)

Chris Gaffney, 57; an Orange County singer-songwriter who played accordion and guitar on the regional bar scene and toured nationally with Dave Alvin (April 17)

Jimmy Giuffre, 86; saxophonist, clarinetist and composer whose career included big bands and minimalist trios (April 24)

Humphrey Lyttelton, 86; jazz trumpeter who hosted the BBC radio game show "I'm Sorry I Haven't a Clue" (April 25)

Al Wilson, 68; soul singer and songwriter who had a number of 1970s hits, including "Show and Tell" (April 21)

Paul Davis, 60; a singer and songwriter whose soft-rock hit "I Go Crazy" stayed at the top of the charts for weeks after its release in 1977 (April 22)

Jim Hager, 66; half of the Hager twins who satirized country life on the TV show "Hee Haw" (May 1)

Jerry Wallace, 79; pop/country singer had a hit in the 1950s with "Primrose Lane" (May 5)

Eddy Arnold, 89; country music superstar who transformed the genre (May 8)

Larry Levine, 80; engineer for Phil Spector's "Wall of Sound" (May 8)

Bob Florence, 75; bandleader and composer won Grammys and Emmys (May 15)

Bruce "Utah" Phillips, 73; an influential figure in American folk music who built a grass-roots following with his songs and spoken-word performances that hearkened back to the days of Woody Guthrie (May 23)

Hugh Jarrett, 78; a member of Elvis Presley's backup band the Jordonaires (May 31)

Bo Diddley, 79; a primal rock and blues musician who helped cast the sonic template of rock more than 50 years ago with a signature syncopated rhythm that became universally recognized as "the Bo Diddley beat" (June 2)

Bill Finegan, 91; an architect of the big band sounds of Tommy Dorsey and Glenn Miller who later traded in commercial success to co-create the Sauter-Finegan Orchestra (June 4)

Danny Davis, 83; a bandleader and record producer who founded the Nashville Brass (June 12)