Noun
trance music (uncountable)
(music) A style of dance music with fast beats, short melodic synthesizer phrases, and a musical form that builds up and down throughout a track, often played in nightclubs.
However, unlike house music, recent forms of trance stay true to their melodic breakdowns and longer transitions. citation Subgenres main Trance music is broken into a large number of subgenres. Source: Internet
One of the main venues of the early Trance music sound was the Omen nightclub (closed 1998). Source: Internet