Greg Wells, Bob Clearmountain, Madlib and Mark “Spike” Stent are among the producers impacted by the devastation in Pacific Palisades and Altadena, along with scores of session and touring players.

That motorcycle is now at the center of a two-count federal indictment in the southern district of Illinois in November against then-Wayne City Police Chief Anson Fenton, 46, alleging he sold ...