Listen to the lead and add your voice. The next member of the
congregation will already hear a group and add their voice to
it.
Good for vocals as well as instrumental music and even chants.
As long as the song is open, you can add your voice to it. The
members can vote on sections of your
addition, make them
louder
or softer. Or point out that you were completely off tune and
leave
your addition mute pending a moderator.
Songs can be closed to the congregation, or open to everybody.