The book of Dominic's I was remembering was "The Singing Irish" published by Scott Solomon Productions Ltd, London, 1967.
It is a cloth covered book of 136 pages.

An Anthology of Irish Songs Ancient and Modern edited by Dominic Behan.

It contains 100 songs, over half of which were written by or arranged and adapted by Dominic. Fintan Connolly and Wolf Stevens provide almost all of the rest of the songs.

Easy and Slow is song 26 in this alphabetical collection.

Dominic's notes in full read -

"In Sean O'Casey's play you will find the chorus of the song printed here, nothing more (last two words underlined). I wrote all the verses".

It was not unlike Dominic to tell you differing stories depending on the situation.

I'm with Jim on this one, Dominic is the 'old lady with a string bag and an awful voice in Giggleswick'.

John