Rodney's Glory', 'The Blackbird', 'The Stack of Barley, (and, I think, 'The Foggy Dew' - though there are several songs with this title) all refer to tune titles.
There are several Irish songs (which I can't bring to mind at the moment) which are made up entirely of song names - I'm sure Martin Ryan will remember them should he be lurking in the vicinity.
Jim Carroll