Dale DeBlock also has a scripture index for all of his songs on www.SingPRAISE.tv
addressing many sermon topics also. He reports having memorized quantities of scriptures by setting them to music as they "sing" to him, and notes he often encounters references from the pulpit that would be greatly reinforced by his music.
For an even larger list of songs indexed by scripture references, try this link for the
NOTE: For a goosebumpy worship experience with congregations who love to sing, try singing Matthew 6:33 as a 4-part round. Here's a link to the music on another site: