Poor Carlos

So as I was leaving work on Monday night I noticed the greatest sign flub I have seen in a while. I work across the street from the Spreckels Theater which is a performance venue. With neon lights flashing, the big old marquee read as follows:

Forgotten Carlos
Dec. 20th - 7:30pm

I think it was suppose to read "Forgotten Carols."

Which according to Deseret Book is "Michael McLean's touching Christmas tale..."The Forgotten Carols" are original songs from the perspective of characters such as the innkeeper who turned the young couple away or the shepherd who slept through the angel's announcement. Their personal accounts, until now, have been overlooked or ignored."

So I wonder what "Forgotten Carlos" is about?