Artie thought that Glee was doing a good job with "Bohemian Rhapsody." Kurt seemed born to take the lead - the whole song sounded like something out of an opera or Broadway musical, and none of the other Glee guys knew musicals like he did (except maybe Ricky).
For the chorus, Artie loved it when they sang Thunderbolt and lightning, very, very fright'ning me! It sounded really dramatic, although some of the others still had trouble starting and stopping at the same time. Mr. Shue was being really patient about it.