• Rock & roll icon Bo Diddley died at the age of 79. Billy Gibbons, George Thorogood and Buddy Guy all remembered the creator of the Bo Diddley Beat.

• It was another week of Metallica madness, as the band previewed six songs from their new album to positive response and were honored with their very own Guitar Hero.

• The prosecution rested at the R. Kelly trial and the defense went to work, attacking key witnesses, alleging extortion, calling music journalists to the stand and asking “Where’s the mole?”

• We continued our Guitar Heroes coverage, as Carlos Santana, B.B. King, Mars Volta’s Omar Rodriguez Lopez, Metallica’s Kirk Hammett and John Mayer all told us their secrets. We also asked our readers to tell us their Greatest Guitar Songs list.