Simple DnB Song Structure

Intro     (build up to a drop) 32
Drop     (main bass line kicks in) 16 (less than 2nd drop)
Verse      32 (often like Intro)
2nd Drop  32 (more intense than prev)
Outro      32 (often like Verse, layers get thinned out)

often Intro = Verse = Outro & Drop = 2nd Drop

Often used: build ups.  Introduce elements one at a time.

drum and bass pop song http://www.youtube.com/watch?v=pOfLpXsFhBY http://www.boyinaband.com/tutorials/