In 2012, Sreela Banerjee of the Pyr Project told me about a brilliant song the project produced about Wallace. It is called 'Wallace was a very busy man' - and it was sung by the Charles Matthews Singers, who are children (largely) from Mickleton Primary School, in Gloucestershire. To hear it click HERE. The words can be read HERE and the music HERE.
This must be the first song ever written about Wallace - the only other I know which even mentions him is this one: http://wallacefund.info/mr-darwin-mr-wallace-mr-matthew-song-mr-haines