Who composed the song “There's a Rainbow 'Round My Shoulder” by Ethel Merman?

The song “There's a Rainbow 'Round My Shoulder” by Ethel Merman was composed by Billy Rose, Dave Dreyer, Al Jolson.

There's a Rainbow 'Round My Shoulder

Billy Rose, Dave Dreyer, Al Jolson

I'm happy, so happy, walkin' on air
The why and the wherefore
Is someone I care for

I'm yellin', I'm tellin' folks everywhere
I know that she loves me
So what do I care

There's a rainbow around my shoulder
And a sky of blue above
Oh the sun shines bright, the world's all right
`Cause I'm in love

There's a rainbow around my shoulder
And it fits me like a glove
Let it blow and storm, I'll be warm
`Cause I'm in love

Hallelujah, how the folks'll stare
When they see that great big solitaire
That my little sugar
My little sugar baby is goin' a-wear

There's a rainbow around my shoulder
And a sky of blue above
And I'm shouting so the world will know
That I'm in love

Get hot!

There's a rainbow around my shoulder
And a sky of blue above
Oh, the sun shines bright, the world's all right
`Cause I'm in love

There's a rainbow around my shoulder
And it fits me like a glove
Let it blow and storm, I'll be warm
`Cause I'm in love

Hallelujah, how the folks'll stare
When they see that great big solitaire
That my little sugar
Baby, baby, baby, baby, she's goin' a-wear

There's a rainbow around my shoulder
And a sky of blue above
And I'm shouting so the world will know
That I'm in love