In a cafe I don’t sing at full volume or anywhere near it. I tend to vocally doodle, quietly until I click record... and then I speech-level-sing. If out and about at shops, walking about, I sing at a gently projected volume. I used to do it at my old job. I started playing at 4. My mother was a singer and piano teacher. From a very young age my sisters and I used to be trooped out to perform for her friends, especially her music friends. I was performing in public from 8-ish, singing in choirs, then playing in youth orchestras and pipe bands amongst other things. I decided at some point that the best way to deal with any notion of embarrassment is to sing as I go about my daily activities. It also meant I got a lot more writing time and practicing! Life’s too short for embarrassment lol Add to that I find if you engage the people who react, they just accept it. In a cafe I’m not performing, but not hiding either. More respecting their space. Sort of. Lol People do ask, probably because I’ll be scribbling on a pad, recording etc. I’ve even been known to do something basic in GarageBand, though I use headphones. But when they ask, they are often interested and quite accepting. I guess I also tend to pick places where chat is louder than the background music. That way I am not ruining someone’s enjoyment of a song. Being sensitive to the environment also helps. If people are having a deep and meaningful, it’s probably the wrong vibe.