The dark zebra was a collaboration between Hans Zimmer and Howard Skarr. The sound pack contains 400 presets – almost all the zebra sounds found in The Dark Knight and The Dark Knight Rises soundtracks, as well as some sounds that were not included in these films. Also included is a special version of Zebra2 (ZebraHZ) requested by Hans to fit his workflow. Some Dark Zebra presets use additional features that are only available in ZebraHZ.