Here’s a new approach to the old museum audio tour: Bluebrain has created a companion piece to the Sant Ocean Hall in the Smithsonian’s Natural History Museum. The band released the free mp3 file today on their website. Instead of a staid guide to the exhibit, museum goers can listen to a dreamy piece of music.  At 17 minutes and 33 seconds, the band warns that the track’s listening time may exceed the amount of time listeners actually spend in the exhibit, but they encourage listeners to keep their headphones in as they wander to other parts of the museum.