Any Song Puzzle - Solution

The Puzzle:

Any Song
A poor woman and a rich woman are talking about music.

The poor woman says she has studied music and can name a song with any name in it.

The rich woman says "OK, if you can find a song with my son's name in it, I will give you a thousand dollars. His name is Demarcus-Jabari."

The poor woman gives her answer and is instantly $1,000 richer.

What was her answer?

Our Solution:

"Happy Birthday."
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