Songs that should be used in videos

[ukiFS]

I think it depends of style and what kind of video is it, if style is fast, rock music and dnb goes well with it, but if its slow and chill style, rap is best for it.  And rock music is best for syncing editing to it, while its hard to make sick sync with rap music. 

[Tupac]

I think some heavy metal songs could be used in freestyle. Look up the song "2 weeks" by All That Remains. I'm sure hardcore could sink to that. I think it takes a certain type of style to do it though...