When you listen to music you love and know by heart, do you sing along with it, even on your main audiophile system?
And does singing along make you appreciate it more or do you regret it because you can’t help yourself?
(Yes, I do sing along. And it makes me love it more)
Thankfully for the rest of the household, no, I am a whistler by nature, but even that is reserved for when there isn’t any music playing anywhere except in my head 
I do sing along when I’m getting into it. Not every listening session is a critical listening session. Sometimes you need to let go and have a good time.
Absolutely. And then I may listen again. But it’s those times of cutting loose when you’re just enjoying the music and not listening to the system. Or maybe that’s just me.
I do. Even when I am not alone.
I don’t sing. I almost never know the lyrics.
Yes. can’t help it.
In the Car for sure…at home I dont dare.
Last time I sang along my wife screamed…wow, that new Vivaldi sounds awful!!! 
can’t, don’t hear words during music…except for Leonard Cohen
I do, but very rarely.
Yes, although my wife told me to cut out singing while wearing headphones while mowing the lawn. Can’t say I disagree with her assessment.
All my listening has been exiled to the basement so there’s nobody to complain but the guinea pigs. I buy them off with food.
It’s something I kind of struggle with. Do I want to listen to the music at the highest possible fidelity that I can manage or do I want to participate? I think I generally default to singing along. It’s weird.
I’m not one for singing but do lots of air drumming!
Not required. I think most of what I remember is made up.
Little boy man on the moon?
OK, I tried singing; didn’t go well. Neighbors made me promise never to do that again. Boy, they can be harsh.