It turns out that the song I had stuck in my head this morning is actually "Holy is the Lord" by Chris Tomlin and not "How Great is Our God" by the same author. Interestingly enough, I tried to remember the tune of "How Great is Our God" and couldn't - even though I was singing it over and over last night. I was also singing "Great is the Lord" by Michael W. Smith. This last one we have done with the congregation Ithink - so I might use it.