Indeed, it has almost become a separate genre, with its own internal rules and distinctively bittersweet tone.
Andrew Masullo's collages of words pasted onto found photographs are marked by a bittersweet tone that is common to much of the work here.
In an interview describing the film and the song that inspired it, Gillis felt the film carried the same positive yet bittersweet tone of the song.
The final verse has a bittersweet, elegaic tone.
There is a bittersweet tone to much of the book, as Art and Marion argue and romance each other, but it ends on a hopeful note.
A bittersweet tone crept into his voice as he mentioned his once-constant companion.
Critics generally praised the film's bittersweet tone and the performances, particularly that of Vanasse.
The happiest case reported here also has a bittersweet tone.
But the solo acquired a bittersweet tone in moments when this lover paused pensively, as if to contemplate his past loves.
Three months later, on a bright spring morning, the bittersweet tone was still present as he discussed his years in office.