The Sexy Brutale 100% Speedrun 1:27:36:07 [WR] [PB] 

So I did another run this time I didnt have the devil softlock. I'm pretty sure its from mashing while talking to him. I could definitly save time in a few places (seconds though)
For example when i go in to the music rooms for the second time I can get in to the side door before the ghosts finish walking so that should be faster.
Try it out yourself its pretty fun!