Jem Aswad Senior Music EditorHipgnosis Songs announced that it has acquired 50% of the copyright interest and writers share in the song catalog of Wu-Tang Clan’s primary producer, Robert “RZA” Diggs. He has produced nearly all of Wu-Tang Clan’s albums, as well as many of the multiple solo albums released by the group’s members.The group’s enormously influential debut album, “Enter the Wu-Tang (36 Chambers),” was released in 1993 and has been followed by a series of group and solo releases,