The song was performed by characters from puppet group The Muppets in 2009. The cover is perhaps best known for its music video, which was originally posted on YouTube on November 23, 2009 before the release of the track. The video features multiple Muppets characters singing partially modified lyrics of the original song and garnered over seven million hits within its first week of release.
The video is a montage by about 70 different Muppets characters singing their part of the lyrics against a black screen, in the same style used by Queen for portions of their promotion video of the song and mimicking the four-person layout used for the cover of Queen's second album. After completing the song, which ends up with mosaic of all the characters singing, it is revealed that this was one side of a computer video conference with Kermit the Frog, who laments his decision for that type of meeting to Scooter.
more at : http://en.wikipedia.org/wiki/List_of_Bohemian_Rhapsody_cover_versions