Rob Zombie == Zombie Rock very heavy, can almost understand him.
Akasha Project == Trance
Bluemen Group == Alternative instrument music
Celtic Nots == Traditional Celtic music with updated instruments
Digital Karma == Fusion Trance
Digital Mystery Tour == good sounding trance
Dimmu Borgir == Theatrical Speed Metal, in (I think) German
Earl Klugh Trio == Theme Music performers (like Goldfinger for 007, The "Deadly Affair")
Enya == Flowy music with words but easily ignorable background music
Federation == Dance Club mix music, some vocals with beats
Frogacult == Hard House Trance
God Is An Astronaut == Just too many styles to classify, but Indie, few vocals.
Haldolium == Psych Trance. Good beats no vocals (err exceptionally few)


If you need more... I have plenty more to choose from.