We've had a love-hate relationship with Magnus Zingmark and Oscar Simonsson for what seems like an eternity. Together, the enigmatic pair form Sweden's Koop, an outfit that stumbled onto the scene in the late nineties with music that was reminiscent of every known genre, and yet completely different and fresh -- think Gene Krupa meets Portishead -- prompting much rubbernecking among fusion bigwigs like Jazzanova and Kruder & Dorfmeister.

Their 2002 album Waltz For Koop had us all hopped up on its sweeping orchestral sounds (made, by the way, entirely out of samples), set to quiet jazz vocals. And just when we'd finished telling everyone how much we loved Koop, they promptly dropped off the face of the earth (save for a remix here and there).

The follow up, Koop Island, was released in the U.S. yesterday. What does it sound like? Glenn Miller-era swing, Yma Sumac-like jungle drums, choirs, marimbas, calypso beats...Best to hear it for yourself, starting with the lovely Ane Brun-fronted Koop Island Blues.