My old English Civil War Society mates' favourite would be Babylon is Fallen (it's in the DT along with another with a similar title).

Mind you, you've got to remember that these friends were of the Cod and Halibut (properly, God and Parliament) persuasion and so were limited in their choice of stuff to sing - unlike those effete Royalists and their bawdy ways.

Parliamentary Armies were much given to the singing of Psalms before and after (even during) battle. The 'wrong but romantic' side had the best songs probably. The 'right but repulsive' side were much more serious. So perhaps you've got to pick your side if you want to be true to the spirit of the time.

Be careful which side you pick - Hull actually started that war by not letting King Charles 1 in, and we're ready to do it all over again if we have to.:-)

Les from Hull - Parliament's most northerly stronghold in England.