There's no underestimating Tangerine Dream's influence on modern electronic music; they've touched everything from techno to underground noise to New Age. Early on, however, T.D. were first and foremost a psychedelic rock band, as spacey and magical as Syd Barrett-era Pink Floyd or the Soft Machine. If you want to explore the outer reaches of sound, look no further than the group's debut album, Electronic Meditation. There are only five songs here, but every one is a droning masterpiece.