Loving someone intensely is both exhilarating and scary as hell and, when you throw in a tendency towards anxiety and depression, the stakes can feel even higher. Which is what “So Few Words (love letter),” the new single — available now — by Toronto-based indie folk-pop artist Francesca Panetta is all about: that smudgy blurred line between fear and excitement.

Written consciously outside of the usual verse-chorus-verse pop structure,...