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.
Was the sound of Joy Division's music inspired by anything?
Joy Division were inspired by Kraftwerk's marriage between humans and machines, and the inventiveness of their electronic music.
Was the vocal sound of Joy Division similar to another singer or group?
By Closer, Curtis had adapted a low baritone voice, drawing comparisons to Jim Morrison of the Doors (one of Curtis's favourite bands).
Did Joy Division tour with Doors?

Question: What other bands sounded similar to them?
Self-contained rewrite: What other bands sounded similar to Joy Division?