Catechism Songs!

I'm so excited that I just discovered these CDs of the Westminster Shorter Catechism questions and answers set to music.  The kids and I have been participating in our church's memory work for the past couple of years, but I plan on focusing on the Catechism next year instead of memory work.  We shall see how far we get.  But, I think the songs will definitely help!

Do you memorize a catechism with your children?  What tools have you found helpful?