Sorcha,

You have to be careful with ABc's < symbol - HTML thinks it's the start of a tag and you lose what comes after. Substitute < (short for less "than" followed by a semi-colon ; with no spaces. Here's your tune again with (hopfully) the last three notes visible

T:Katie Bairdie, also spelled Katie Beardie
L:1/8
M:4/4
Q:1/4=160 K:D
A>B A>G F>G A2| E>F G>F E>F G2|
A>B A>G F>G A2| D2 F<A E2 D2:|

Wassail! V