For follow-up discussion and general commentary on the topic. Comments are sorted chronologically.
Lord has been so gracious to me that I am filled with joy. While I cannot sing well, I can sing His praises joyfully, and I do. While the congregation may hear noise, the Lord hears my joy. My offering of praise should not be hindered by concerns of what others might think, but rather expressed with all the thanks and love I can muster.