Songspell is used in all major religions, and is by no means restricted to "gospel". It can vary from simple praise/aknowledgement, to bindings, to blessings. It's power, is hidden in the rhythm, as it draws your subconscious, allowing you to more accurately "build, point, and shoot" your intent with minimal resistance/interference. I have learned from experience, that every personality/emotion/energy has its own "tempo" so to speak. And to create harmony is key in songspell. Have you ever gone for a drive, and used the radio to time your actions? Or even while humming, your actions/thoughts seem to line up quite nicely? This is songspell in its raw form. The refined would be chants, poems, rhymes, and yes spells(spoken slowly to allow stronger connection of words to intent) in rhyme..
This is a precursor to a class I may teach, depending on input. I first challenge you to try harmonizing with your world using the above examples.. I leave you with a few lyrics.. " Analog type piece, sky wide. Sync to the tinker inside.. move to the rhythm of the moon and tide, (when) the indigo children come." Have fun! :D