<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Eric,</div><div>I don't have any quarter-comma pieces for you with augmented sixths, but Ligeti's <i>Passacaglia ungherese </i>(1978) for quarter-comma mean-tone harpsichord may be of interest to you, depending on what kind of project you're working on. As a rule, Ligeti avoids wolf intervals in harmonic sonorities in this piece (though not entirely), but there are a number of wolf melodic intervals, including some prominent and frequently repeated diminished thirds in the ground. I've attached the opening of the piece. Bar 3, chords 2 and 3 (and the 'resolution' in the two subsequent chords) would probably interest you most, as it's the closest thing to an augmented-sixth chord in this piece: a le-fi-sol bass schema, which does follow with the expected 'tonic' (in first inversion). The notes of the 'le' and 'fi' chords would, interestingly, combine to form a French-sixth chord, but Ligeti never capitalizes on that in this piece.</div><div><br></div><div>Kris Shaffer</div><div>Ph.D. candidate in music theory, Yale University</div><div><a href="http://kris.shaffermusic.com">http://kris.shaffermusic.com</a></div><div><br></div><div><br></div><div></div></body></html>