Who or what is Tangerine Dream?

Tangerine Dream is a performing group who's music tends to defy any explanation and attempts to pidgenhole into any distinct classification. Since its formation in 1967, there was no 'New Age' or 'Contemporary Instrumental' section in your record store. TD's musical style and artist line up are never static or predictable.
Former members:

TD's current line-up consists of Edgar Froese, his son Jerome, and Linda Spa. All three play synthesizer/keyboards, Edgar & Jerome also play electric guitar, Jerome plays percussion and Linda plays Sax.
Currently, TD's musical output consists of 27 Studio Albums, 9 Live Albums, 19 Soundtracks and 9 Compilations. One should also not forget the 6 Grammy Nominations!

Some interesting TD trivia: