I'm a software engineer. I choose music or silence tactically. If I need to power myself through a task, I use music to do it. If I'm trying to solve a difficult problem or master a complex body of unfamiliar code, I need silence.

Before WFH become the norm in early 2020, there were days when I made no progress at all until everyone else had gone home. The precious hour between 5pm and 6pm -- when the cleaners came and talked to me and broke my concentration again -- was sometimes more productive than the entire day that led up to it.

What also helps, working alone, is the ability to talk out loud to yourself. For me, it's a superpower. I dread losing it if Management decides to pull us all back into the office when the pandemic is over. (Or, even worse, continually talking to myself without realising it. :-))