Hardstyle

Hardstyle is a music genre mixing influences from trance, hardcore and rave music. It is a subgenre of Hard Dance Music. The average time is between 140 and 160 bpm (beats per minute), however, hardstyle DJ's are known to use their own time beat.

The hardstyle sound typically consists of various musical elements: an almost "heavy" sounding kick, bearing uniqueness, intense reverse basslines and adrenaline-rushing melodies, which often take place at the middle of the song. It bears some similarities to Hard Trance, but still upholds a unique sound. Many hardcore - artists also produce hardstyle tracks.

Source : http://en.wikipedia.org/wiki/Hardstyle