This is Mary Louise Bringle‘s paraphrase of the Magnificat as set by Norah Duncan, with a tune called DUKTA. It is certainly a lively setting.
I have already blogged the version still available at GIA set by Michael Joncas.
You can see the text and tune in the preview archived at Hymnary, but otherwise you are probably going to need one of the two hymnals in which it is noted to be included.