Instruct: Classify Amazon reviews into positive or negative sentiment
Query: She Is Bjork!

I consider Who Is It to be the best single off Medulla. Upbeat and cheerful, the song sings of recognizing the person who's able to share your joy and pain. The edit version of the song here is the shorter version of the album track. UIt's the only CD you'll find this song.The b-side is the fabulous remix of Oceania featuring the undisputed funk soulstress Kelis whose sultry vocals amazingly merge with Bjork's intensity to great effect. I certainly welcome more collaborations with Kelis whose so funky herself.Great CD. Get the remixes and the DVD single too. The video is simply gorgeous.