The ABC's according to Hayden.

To the tune of the Alphabet song, of course!

"A
B
C
D
E
F
Geeeeee
H
I
K
K
Elmo
Peeeeeee
Teee
Veeee
Ick
Y
Zeeee
Now I know my A,B,C's, H, I, K, K sing with meeeeeeeeeee" 

Lucy doesn't sing along but she sure does smile a lot when her sister serenades her!