A suspended 2nd in a minor chord. Minor 9th, if that's the way you prefer to think of it. A pretty scrunchy, yet still tonal, melodic and (relatively) accessible dissonance. And quite a nice'n at that.
Megan Palmer makes good use of these babies in today's song, Hair of the Dog (download mp3 via YouSendIt). Listen as she sings, 'Better to chase or be chased' (the second line of the song) - the way the melody stubbornly refuses to resolve, lingering on the 2nd. The motif recurs throughout.
Chord-wise, this is a simple song: nothing too tricksy happening ... Allowing the melody, with its enforced dissonance, to remain at centre-stage.
I like the unfussy, recorded-in-a-room violin – pleasantly imperfect.
If, dear Soiler, this is to your taste, why not shimmy over to the official Megan Palmer site?