A similar story-- My father is a musician, and taught me a bit of basic stuff on the piano at age 7. I learned to play a couple Jazz songs. I kept improving and I enjoyed the process. Around the time I was 9, a family reunion came up. He had been from a band who was about to do a gig there, and I got to actually play a song with them. Since then, I would occasionally play the piano on my own for songs I liked, typically making remixes of game soundtracks and stuff like that. I didn't think too much of it though and never thought of it being something I'd focus on anytime soon.
Timeskip to when I'd been around 12 years old, and the indie game, Undertale, was released. I didn't know about it until I saw a video of all the endings of the game, and I thought it was strange, but it interested me enough to take a look at it. I eventually found the ever-popular fight with Sans, and I liked the song that went with it, "Megalovania".
I purchased FL Studio 11 a little while prior to that, and I decided to use it for making a remix, excited to see what I could do with it. I made several songs, and I got caught up in the game, and loved it to its entirety. I found the concept of "AUs" or Alternate Universes where the characters were set under a different premise. I wanted to make one of my own, and named it "XenoTale". I made remixes of about 9 songs from the soundtrack at incredibly fast speeds, managing to remake a whole song in only a day or two. The songs typically lasted up around 3 or 4 minutes. They sounded pretty decent, but was lacking in the mixing and mastering department, where it didn't do so well.
XenoTale Soundtrack:
"Megalovania" = "Xenophobia/Melancholy"
"Battle of a True Hero" = "Justice"
"Bonetrousle" = "Underestimated"
"Your Best Friend" = "Naive"
"ASGORE" = "Privilege"
"Heartache" = "Sorrow"
"Death by Glamour" = (I dont remember the name of this one)
"It's Raining Somewhere Else" = "Solitude"
"Megalo Strike Back" (fanmade) + "Megalovania" = "Retaliation"
Anyhow, it inspired me to make more music, and as a result I made tons of different songs over the following years on my old desktop. Songs named "Brutality", "Malevolence", "Apprehension", "Ascension", among others. All of them were unfinished, but had at least 2 minutes worth of music in each of them.
And yeah, around that time, I realized I could try to get serious about it, and actually do it for a living, possibly as an eventual form of income.
The next couple years, I'd occasionally make new songs, and eventually, I decided to make it happen-- to do it professionally.