Conversation so far:
What was Joy Division's style of sound?
Joy Division's style quickly evolved from their punk roots. Their sound during their early inception as Warsaw was described as generic and undistinguished punk-inflected hard-rock.
Did Joy Division's style change over time?
Critic Simon Reynolds observed how Joy Division's originality only really became apparent as the songs got slower.
Did Joy Division's music sound differently from getting slower?
As the songs got slower, Joy Division's music took on a sparse quality.

Question: Was the sound of their music inspired by anything?
Self-contained rewrite: Was the sound of Joy Division's music inspired by anything?