Who is more of an independent artist, Pop Evil or Imogen Heap?
Imogen Heap: Imogen Jennifer Heap (born 9 December 1977), known professionally as Imogen Heap ( ), is an English singer, songwriter, record producer and audio engineer. Pop Evil:  He then added Dave Grahs, Dylan Allison, and Jamie Nummer. Pop Evil:  Later, guitarist Tony Greve was added as a temporary studio musician for the band but was invited to become a full-time member in early 2007.
i don't know