Conversation so far:
What led Tangerine Dream to go independent?
Tangerine Dream wanted artistic freedom with their music that wouldn't be possible outside of going independent.
What happened when Tangerine Dream went public?
Thought Tangerine Dream wasn't overtly popular during their debut era, they helped pave the way for other musicians of the same or similar genre.

Question: Were any of the albums successful?
Self-contained rewrite: Did Tangerine Dream have any successful albums?