You are right, plagiethecreep, there is a crack on Manolo’s guitar that goes right through the heart. Actually, there are several cracks and other signs of wear and tear – you can see that the stars are fading for example – that weren’t there before:
Personally I don’t think there is a meaning to that particular crack, like you suggested there might be, but for the sake of fun let’s overthink it! So, before the I Will Wait For You transition, there was no crack: I’ve mentioned before that towards the end of this sequence that things get, shown with color and sound(at least that’s the impression that I get), bittersweet. They’re grown up and missing Maria, and Manolo isn’t very happy about his life. So I think those two things may be illustrated by the crack across the heart.
A super girly and peppy blonde girl who wears bright pink dresses and skirts everyday is best friends with a quiet goth girl who of course sports all black clothing and big lace up boots. Someone jokes and yells to them “Hey look, a fairy and a vampire!” The blonde turns around and flashes a fanged grin and says “She’s human actually.”
AngelMihe 