Hans Zimmer Lee Kirby Hans Zimmer and his Bleeding Fingers collective are set to score the HBO Harry Potter series. Zimmer, who has scored more than 500 TV and movie projects, has started work on the composition alongside the collective co-founded by Zimmer, Russell Emanuel and Steven Kofsky. They are taking on one of the biggest shows of this decade, HBO's reboot of the JK Rowling franchise that made stars of Daniel Radcliffe and Emma Watson. The score is a big job, coming after the memorable movie music composed by John Williams, Patrick Doyle, Nicholas Hooper and Alexandre Desplat.