I play piano, guitar, and flute.
Which I focus on depends on what my life is like at the time.
When I'm around people who like to do sing-alongs, I bring my guitar and accompany the songs. They're typically the sort of songs that you find in Rise Up Singing and the magazine Sing Out!.
And when I'm in folk-dancing spaces (mostly American Contra and English dancing), I play flute because the pick-up dance bands always have room for melody instruments, and flute (esp. piccolo) can be quite audible. So these are mostly English, Irish, and Canadian reels and jigs and the like.
When I'm alone most of the time, like I am now with the COVID-19 restrictions (I'm in New York State, so it's been since March), I end up playing piano, because (for reasons I won't bore you with) I only really feel comfortable playing piano when I'm alone and I can imagine that nobody hears me. I've been playing the kind of music I learned back when I was taking piano lessons when I was a kid: Beethoven Sonatas, Chopin Etudes, Polonaises, etc., some Bach and the like, and some stuff like Scott Joplin and David Brubeck. I don't play very well, but since I'm just playing for myself, I just try to enjoy the moments when it works out and more or less sounds like the way it is in my head.
I also sing. Back when getting together in person was a possibility, I was in a chorus of around 100 people for a while, and I was in a choir until COVID-19 hit.
For me, the performance aspect is very much secondary. For me, it's about getting in touch with my soul. Music gets around all the barriers I had to put up to survive and goes straight to the soul. It also gets me outside of myself and my life and my inner misery and into an alternate universe where there is nothing but the music and the harmony. Just swimming in an ocean of music like a dolphin in the sea.