Conversation so far:
What was there musical style?
Cynic's first recordings feature a more punk, thrash and hardcore sound, but in the 1990s their sound changed.
What did their sound change to?
a highly complex, experimental and extremely technical form of progressive metal, while still retaining their death metal roots.
Did they change their sound any more?
Many influences from jazz and jazz-rock fusion can be heard on their debut album Focus.
Are there any other interesting aspects about this article?
Cynic's 2008 album Traced in Air melded together the styles and influences heard on 1993's Focus with the more progressive-oriented Portal approach.

Question: What is a Portal approach?
Self-contained rewrite: What is a Portal approach?