The teacher played on the upright piano, she was explaining the song to all the students in the what?
Options:
- music room
- bathroom
- house
- living room
- music store
Please answer and provide answer explanation.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Teacher played the upright piano in the music room. At music room, teacher was explaining the song to all the students. The final answer: music room.