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. Imogen Heap:  She began writing songs at the age of 13 and, while attending boarding school, taught herself both guitar and drums, as well as music production on Atari computers. Pop Evil:  He then added Dave Grahs, Dylan Allison, and Jamie Nummer.
i don't know