When used as a noun, cover refers to a recording by an artist who is not the original songwriter. When used as a verb, cover refers to the act of recording the song.
Psychedelic Trance Music
Electronic music became popular as a result of advances in technology (particularly the development of Musical Instrument Digital Interface, or MIDI), and has since blossomed into a bewildering variety of genres including house, techno, trance, breakbeat, hardcore, and ambient.