I was looking for a different song about a leprechaun, and I ran across this one, and it was too good not to add to our inventory.

You can hear this recording at The Internet Archive:


LEPRECHAUN LULLABY
Words and music by Glen Hurlburt, ©1949.
As recorded by The Mariners with orchestra directed by Archie Bleyer, Columbia (38624), 1949.

1. A little boy read in a wonderful book (bickety-backety-book)
That fairy-folk dwell in a dell by the brook (brickety-brackety-brook)
So he hurried straight off fast as short legs could walk (wickety-wackety-walk)
"I'll find them," said he, "and we'll have a good talk" (tickety-tackety-talk)

CHORUS: Oh-lee, oh-lay, oh-loo-loo, my darlin',
Children have quizzical ways.
Oh-lee, oh-lay, oh-loo-loo, my darlin',
And some keep them all of their days.

2. He came to a man who was mendin' a clock (clickey-clackety-clock)
He got it to tick but it just wouldn't tock (tickety-tackety-tock)
And the little boy cried: "Will you come help me look?" (lickety-lackety-look)
"Pooh-pooh!" said the man as his finger he shook (shickety-shackety-shook)

CHORUS: Oh-lee, oh-lay, oh-loo-loo, my darlin',
People forget they were small.
Oh-lee, oh-lay, oh-loo-loo, my darlin',
They think they are wise 'cause they're tall.

3. The little boy came to a door in a rock (rickety-rackety-rock)
It opened right up when he started to knock (knickety-knackety-knock)
And there were the leprechauns under an oak (ickety-ackety-oak)
A-dancin' together like vapor and smoke (smickety-smackety-smoke)

CHORUS: Oh-lee, oh-lay, oh-loo-loo, my darlin',
Children have quizzical ways.
Oh-lee, oh-lay, oh-loo-loo, my darlin',
And some keep them all of their days.

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The Internet Archive has another recording by by Phil Regan with Leo Arnaud and his Orchestra and The Jud Conlon Choir,
RCA Victor (20-3936-B), 1950—but they omit verse 2 and its chorus.