Manson contacted Spector shortly after the producer arrived, dispatching a guard with a note. "[Manson] said he wanted him to come over to his [cell]," Spector's wife, Rachelle, told the New York Post. "He said he considers Philip the greatest producer who ever lived."
Certainly Manson has a right to an opinion. Though his clan, the Manson Family, are known as killers, they were also conceived as a music group. Before launching the murder conspiracy that killed Sharon Tate, Manson and his followers recorded songs with the Beach Boys' Dennis Wilson. Terry Melcher, who produced the Byrds' Turn, Turn, Turn, was another acquaintance — and a target — of the group.
Smithsonian Folkways ought to throw some money at that project. It's straight down the lineage of California folk-psych pop, with a weird zag over to white prison songs. America can listen to records by Robert Pete Williams. Why not Spector and Manson?