Re: Music for Hookah
There's a ton of good lounge music that would work well. Pretty much anything by Thievery Corporation is good; look especially for the albums "The Mirror Conspiracy" and "The Richest Man in Babylon." Also look for "DJ Kicks: Thievery Corporation Remixes," which contains remixes of Thievery Corp stuff by other DJs. Also, in a different direction, mellower post-rock like The Album Leaf and Sigur Ros sound great.
Alternatively, you could go for fusioned stuff like Anoushka Shankar.