this isn't the background music of the dance, i picked the song since lately heard it so many times on radio, and i like the beat of part of the song. Beyonce has a great voice, and the piano part in the song is pretty nice as well, definitely has Alicia Keys in it.
shot this video with Canon 7D/tamron sp 80-200/f2.8 manual focus lens/720P/60fps/f2.8 on a monopod. got the lens for video at a real cheap price : $200CAD. it has a single ring for both zoom and focus , wonderful for video since you can do zoom in/out and focus with one hand at the same time. and it's a parfocal lens, which helps video a lot.
also the focus ring is very smooth. it's probably the 1st time i used it for video, and love it :D
also the 1st time I tried slow motion and it worked pretty nicely. edited on sony vegas pro.