i think is really good to be hearing music when you working , to me it could be a Lil distracting unless if is really loud
and you trying to hear to your music or sometimes when they have a headphones and is really loud that sometimes makes me a Lil distracted but still i agree that is better listen to music so yeah the reason why i hear music by doing work because it gets you focus because people these days be getting distraced by someone talking about something interested or making jokes so you rather lets talk and dont finish nothing or lets us hear music and finish our work