Music Prince - Renaissance single that never was ?

Recent two-hour show on Radio Cambridgeshire was a special edition of the Eclectic Light Show to mark 40th anniversary of passing of Sandy Denny.  Included playing of whole of Mandy Morton's "Magic Lady" album named in Sandy's honour, and some discussion of each song.  Mandy says that Renaissance were interested in the song "Music Prince" as a possible single.  I have never heard this before - thought it might be of interest.  I can imagine it sounding a bit like "Carpet of the Sun", I suppose !

 Not sure if link will work outside UK: http://www.cambridge105.co.uk/eclectic=01-04-2018

If not, you can find it on YouTube: Mandy Morton and Spriguns: Music Prince.