Hard Trance, Hard Trance

The "hoover" sound, so named, due to its "vacuum-like" drone, made famous by Human Resource in the early techno classic "Dominator," is used infrequently as of late, giving way to harsher lead melodies through synths or pads. Recently, a difference in production styles between the two stables of hard trance has developed, splitting the genre into what is commonly known as European hard trance, which can contain darker elements, and shares common production techniques with hardstyle such as the familiar off beat bassline and snappy snarerolls, which sets its roots in trance's heyday, with wide, epic synths and rolling, often "bubbling" basslines. Tempo varies from 140 to 160 beats per minute. Jones & Stephenson's track, "The First Rebirth" was one of the first hard trance tracks ever made, even though its bpm speed is actually that of hardcore music.

Source: Wikipedia > Hard Trance