A Denver, Colorado man became a piano genius overnight after hitting his head on the bottom of a pool.

Six years ago, then 40-year-old Derek Amato dove into the shallow end of a pool and hit his head, according to a report on the Today Show. He suffered a severe concussion, hearing and memory loss.

But a few days later he sat down at a piano for the first time and played an original composition until 2 a.m.

“As I shut my eyes, I found these black and white structures moving from left to right, which in fact would represent in my mind, a fluid and continuous stream of musical notation,” Amato said in a blog post on the Wisconsin Medical Society website.

In the blog post, he also described playing for his mother:

"We found the nearest piano as I asked her to sit next to me. I remember asking her if she was ready. I shut my eyes and hoped that I would again see these black and white structures moving left to right. I began to play as if I was exploring some unfound treasure that had been locked up all this time in my head. My mother sat and cried, and then asked me, "what are you doing." My response was simple, "I guess God decided to give me my birthday present a bit early this year mom."

Amato is one of just 30 known "acquired savants" in the world. He's working on another recording of original music.