I’ve always found the phrase “tugging at your heartstrings” to be kind of odd. The phrase always makes me think of some kind of bizarre organic musical instrument — a Cardio Harp, with strings connected to a living heart. I don’t think the idiom is intended to evoke such a macabre image, but there you go.
If such an instrument did actually exist, however, it’s a sure bet that the artists at Pixar would be virtuosos. Their latest masterpiece, Up is a brilliant film. The first 15 minutes of the movie alone could be titled “Opus 15 for Cardio Harp”.