I'm in my 30s and have had almost 0 experience in music before. I bought my toddler a xylophone a few months ago and I started playing random keys (just trying

I'm in my 30s and have had almost 0 experience in music before. I bought my toddler a xylophone a few months ago and I started playing random keys (just trying to improvise a melody on the spot) every day or so for less than an hour each time... Then after about a month, I found that I could teach myself to play pretty much any piece of music from memory in only a few minutes (national anthem level complexity). My improvised melodies have been getting better as well. The xylophone helps a lot because each note has a different color and so I now associate each color with a particular sound. I tend to think of notes as (left to right) going from sad to happy. There are 2 notes I use as a reference which are 'emotionally stable'; one on the left (sad) side and one on the right (happy) side. On the left side, there is a blue note which I consider to be the last one in the 'sad' spectrum just before it gets happy... And on the right side, there is a yellow note which is at the end of the 'happy' spectrum just before the mood goes into a kind of mania.