Soundscan is a company that tracks and publishes data from the sales of music and music video products throughout the United States and Canada. Billboard uses SoundScan to create its album charts each week for album sales in the U.S.
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.
