Shout to the Lord, all the earth, let us sing.
Thankfully, that doesn't say let us sing the right notes because I can't. I can't clap out a beat (so don't try to follow me when I'm at a concert, I'm just trying to mimic the crowd) and I can't read music (music classes and a painful year of piano lessons cemented that fact) and I can't hear if something is being played right or not (that does mean I enjoy recitals with all levels of expertise).
But I love music. I love a good song. I can make a joyful off key noise and I can shout out of tune with exuberance. If you glance over your shoulder to see who is doing that and it's me, well, I'd say I'm sorry but I am really not.
It sounds good to me and your attention only makes me louder....even when I don't know all the words.