I found this - The Cambridge Revels performs a version of "Let Union Be," which is a traditional drinking song with roots in the English Grange community. They alternate this song with "Come, My Lads and Let's Be Jolly". The song's lyrics, as performed by the Revels, include the line "Let union be in all our hearts". The song is also available on their album "The Wild Mountain Thyme," according to revels.org.
The Cambridge Revels, a long-standing tradition of seasonal revelry, often features lively music and folk traditions, and this version of "Let Union Be" is a prime example of that. The song is a call for unity and merriment, fitting with the Revels' celebratory atmosphere.
Here is the songs as performed....

https://revels.org/product/the-wild-mountain-thyme/

Tim Radford