Anna, the owner of Maggie-Ann, is a compulsively creative person and Heart of the Water is her latest passion. You can read more about her on her own website http://www.annalovatt.info/ and a nice resume of the show on http://www.grannybuttons.com/granny_buttons/2010/09/heart-of-the-water-is-it-the-first-canal-podcast.html.
The show is well worth a listen as Anna is an excellent broadcaster. If you know of any local musicians, please suggest they get in touch.
The show is all Anna's own work. Mercia Marina's connection is simply that we are fortunate to have her as a moorer and so bathe in the reflected glory.