The folk music of Ireland (also known as Irish traditional music, Irish trad, Irish folk music, and other variants) is the generic term for music that has been created in various genres in Ireland.
In A History of Irish Music (1905), W. H. Grattan Flood wrote that, in Gaelic Ireland, there were at least ten instruments in general use. These were the cruit (a small harp) and clairseach (a bigger harp with typically 30 strings), the timpan (a small string instrument played with a bow or plectrum), the feadan (a fife), the buinne (an oboe or flute), the guthbuinne (a bassoon-type horn), the bennbuabhal and corn (hornpipes), the cuislenna (bagpipes – see Great Irish Warpipes), the stoc and sturgan (clarions or trumpets), and the cnamha (castanets). There is also evidence of the fiddle being used in the 8th century.
There are several collections of Irish folk music from the 18th century, but it was not until the 19th century that ballad printers became established in Dublin. Important collectors include Colm Ó Lochlainn, George Petrie, Edward Bunting, Francis O'Neill, James Goodman and many others. Though solo performance is preferred in the folk tradition, bands or at least small ensembles have probably been a part of Irish music since at least the mid-19th century, although this is a point of much contention among ethnomusicologists.