New joke, offertory, choir practice

1. A new knock-knock joke. Pastor Tommy told this joke very badly (bad sense of timing) this morning at church, but I love this joke, and I can tell it very well because it's right up my alley.
   
   A: Knock, Knock.
   B: Who's there?
   A: Control freak. Now you say, "Control freak who?"
   
   
2. The organ offertory, but I can't remember the name
   
   
3. A chance to sing with the choir again