I was enrolled in music when I was 4 when I played a medley consisting of classical artists on the harmonica.
First I learned beginner piano through a teacher. She was a really shitty teacher, so my parents fired her. I continued to teach myself piano from there. I was about 6 when this happened.
At 7, I was enrolled in Bagpipes, started off with practice chanter, not long after moved onto bagpipes, and at 11 I was in the competition band.
At 11 I also took up the Euphonium in school band and got really good at pretty fast, when we were learning simple songs, I would try and make it more difficult for myself by learning the harmonies to it rather than what was put on the paper. The teacher would yell at me for doing so.
At 13 I took up the guitar, took 3 months of lessons, then started learning on my own. Needless to say I caught on quick.
I learned basic drum beats by ear at 14, and I found that this is the instrument that's hardest to learn for me, especially in the genre I prefer to play.
At 15, I took up the violin, I know how to play, but I would prefer to play a cello instead if I could ever get my hands on one.
I started learning theory around the same time I started learning piano, but I didn't get serious about the theory until early last year.
I also enjoy experimenting with any other instruments I can get my hands on.
Music has been with me all my life, and I couldn't think of anything else I would enjoy but music!