Easter Carol from the Frost and Fire album by the Watersons. It starts off:-
The holly bears a berry......

Way back in the 1960's some coventry teenagers did a lovely song for passion play. It was popular at the time and went:-

gentle Christ, Son of God
They nailed him up to a cross of wood

I don't know where you'd get the music, but it really is lovely.

I'm no traddy, but doesn't the Bitter Withy have an Easter theme. perhaps I'm getting it mixed up with something else.