Does anyone know of any actual conclusive studies in this area? Like most here, I have my own rules and preferences. The main rule seems to be it must be familiar, in fact it's best if I've heard it a thousand times already. But there are only three kinds of music that work for me:- 1. Music I first got into during my teenage years when I was sitting up all night coding assembler (OK, I admit it, Pink Floyd) works we…
Your #1 and #3 definitely work, especially in harmony, but I have found that I do well with songs in langauages that I don't know at all but I like the general style. For example, when I need enegry and work, I listen to Rammstein or The Pillows (Japanese). If I need to relax a bit and work, Seeed (german reggae) or something french are my go to. There's a lot more and sometimes I just put on a Spotify international playlist. The randomness and lack of understandable lyrics helps me, as long as I don't try to learn what they are saying.