Which composers dad would make him get up in the middle of the night and practice until morning?

The composer you're referring to is Sergei Rachmaninoff. His father, who was a former military officer, was known to have a strict approach to his son's musical education. Rachmaninoff would sometimes be made to practice late into the night, emphasizing the discipline and dedication expected in his musical training. This rigorous upbringing contributed to Rachmaninoff's exceptional skill as a pianist and composer.