Yes it is:
Three is a magic number,
Yes it is, it’s a magic number.
Somewhere in the ancient, mystic trinity
You get three as a magic number.The past and the present and the future.
Faith and Hope and Charity,
The heart and the brain and the body
Give you three as a magic number.[…]
A man and a woman had a little baby.
Yes, they did.
They had three in the family.
That’s a magic number.
And now we have three girls…;-)
lyrics from what will soon be one of my favorite Schoolhouse Rock songs…