Why my dad turn on all the lights?

@Courage1337 I agree, that's a strange thing for him to do. Did he return yet? Did he tell you what happened?

The only thing I can think of is that maybe the person he was on the phone to told him something very upsetting and he became disoriented. But, you know, that just a complete guess.

Charlie

Nope, didn't say anything to me, he just left with a sigh. I think I upset him somehow.

This seems like an attempt to be passive aggressive towards you rather than directly telling you to not make so much noise at 2AM when he's trying to sleep. Would you describe your father as the passive aggressive type? If so, it honestly isn't worth it to try and decipher his behavior. Since you are an adult, I would assume, considering you're paying the electric bill, you should tell him directly that if he has something to say to you he should just say it. It will take a lot of stress off of both of you as you won't have to deal with the anxiety of wondering what the other person is thinking.

Also, I would consider picking a different time to practice. Most people probably would not appreciate being woken up at 2AM to the sound of someone practicing an instrument.