From Altan's website at http://www.altan.ie/theblueidol/track2.htm:

Uncle Rat: song
Trad. arr. Ní Mhaonaigh, Curran, Kelly, Byrne, Tourish

This funny little ditty was learned from the singing of the great Elizabeth
Cronin of Ballyvourney, County Cork. There are many variants on this theme ("The Frog's Wedding", "Froggie went a-courting") and it is still sung in many parts of the English-speaking world. A version of the song was first published in "The Complaynt of Scotland" in 1549, making it very old indeed!

Uncle Rat went out to ride,
Kitty alone Kitty alone,
Uncle Rat went out to ride,
Kitty alone and I.
Uncle Rat went out to ride,
Sword and buckle by his side,
Ma cax macari duck and a dil,
Kitty alone and I.

Lady Mouse, will marry me?
Kitty alone Kitty alone,
Lady Mouse will marry me?
Kitty alone and I.
Lady Mouse will marry me?
Ask my uncle Rat, says she,
Ma cax macari duck and a dil,
Kitty alone and I.

Uncle Rat, will you marry Lady Mouse?
Kitty alone Kitty alone,
Uncle Rat will you marry Lady Mouse?
Kitty alone and I.
Uncle Rat will you marry Lady Mouse?
Yes, kind sir, and half my house,
Ma cax macari duck and a dil,
Kitty alone and I.

Lady Mouse, where will the wedding be?
Kitty alone Kitty alone,
Lady Mouse, where will the wedding be?
Kitty alone and I.
Lady Mouse, where will the wedding be?
Ask my Uncle Rat, says she,
Ma cax macari duck and a dil,
Kitty alone and I.

Uncle Rat, where will the wedding be?
Kitty alone Kitty alone,
Uncle Rat, where will the wedding be?
Kitty alone and I.
Uncle Rat, where will the wedding be?
Up at the top of a holly tree,
Ma cax macari duck and a dil,
Kitty alone and I


Additional musicians:

Jim Higgins.....................................bodhrán
James Blennerhassett.......................bass