There are at least 5 bands called Jinn. See below 1) JINN is a four-piece j-rock band.
2) Jinn is an American industrial rock band.
3) Jinn was a grindcore/thrash band from UK.
4) Jinn is an Austrailian rock band.
5) Jinn is an American jazzy/blues/ambient group. 1) JINN (See ジン) is a four-piece j-rock band that is known for performing the fourth opening theme called "Raion" for the anime series "Blood+", as well as "Kaidoku Funou", which is used as the 2nd opening theme for 2007's "Code Geass: Lelouch of the Rebellion".