The idea is absolutely great, and the fact that you have to make your own notes is awesome and gives player some agency. The music was fine, though maybe a bit repetitive after a while and sometimes sounded a bit too cheerful for a game about a murder :D
Gameplay wise - I couldn't shake off the feeling that the dice mechanic/interrogation was really tacked on. There wasn't any decision to be made (just roll and hope for high results that you then assign for those 3 things) and it felt really boring since it would pop out every time a new location is discovered (and there are a lots of those). I'd really wish there was a way to enjoy the story and the detective work without that "minigame".
But overall I had fun and in the end it's the story that was the main dish :)