room5: Ongakushitsu (room5 音楽室, Room 5: Music Room) is the fifth game in indie developer Ichima's Escape Room game series. For this game, you are stuck in a music room in what appears to be a middle school. Now you could open up the windows and call out for help, but that's not an option here. You must scrounge the room for codes, clues, and objects and unlock the door's very odd lock, which requires three specific objects.
Spikestuff in this run knows where all the things are and what all the codes are and escapes from the room, hopefully getting home in time before the sun comes down.