[Cthulhu_]

I don't think that's down to music per se, but a more generalized thing. Software developers love being in a flow state, some of them pursue it all the time (...guilty) and get frustrated when their job changes (e.g. moving towards management) so they spend less time in that flow state.

But also, this can create waste, in that people write the Best Code Ever in their flow state (while listening music or not), but... it wasn't necessary in the first place and the time spent was a waste. This can waste anything from an hour to six months of work (honestly, I had a "CTO" once who led a team of three dozen people or so who actually went into his batcave at home for six months to write a C# framework of sorts that the whole company should use. He then quit and became self-employed so the company had to re-hire him to make sense of the framework he wrote. I'm sure he enjoyed it very much though.)