The original version of the song is on "Inarticulate Speeches of the Heart".There's another version on a Van tribute album called "No Prima Donna" performed as a duet by his daughter Shana and Brian Kennedy.
I think the best version is the one with the Chieftains.
Callie
Go here: Lyr Add: IRISH HEARTBEAT (Van Morrison) --JoeClone, 19-Jan-2010.