Sam , Artie, and Puck sang the addictive song during their prom, and I'd have to say it was actually quite good - there were times Ryan and I were tapping our feet. Contrary to popular rumors, Black did not make a cameo on the show.
I think I may know what director and producer, Ryan Murphy was trying to convey by playing this song on prom night, and correct me if I'm wrong - but don't you feel he did this because of the backlash she got when the song was released? Haters and bullies dissed her when she released her music video, and in the end, she was able to come out on top. This season's primary focus has been bullying, so it only makes sense to me.
Here are the boys (Sam , Artie, and Puck) singing Rebecca's song on last night's episode.

