This is a four-part jig - probably the most widely played four-part jig in Irish music.
Because it has a total duration of 64 bars, it can be very handy for set dancers who may occasionally ask for a tune of that length.
Normally it's played in D Major, but Tony's version is in C Major, with a capo on the 2nd fret.
Listen to the lesson (Lark_In_The_Morning.mp3), 9 minutes 35 seconds. 1.09 MB)