Yeeees. I played piano for years without a teacher because my parents had me choose between my instruments and I wanted to do orchestra more than anything else. It led to me playing a Beethoven sonata on piano at my senior recital, but also was why I knew most of the hymns when I was a missionary and sent to places where they hadn't had a pianist for three years. I got a piano teacher after being a missionary and have now done solo recitals and own the piano that my mother grew up playing and am the accompanist for the choir at church. Just because I did piano as something I enjoyed without having to be good at it.