I'm typesetting some music, and in order to stay as close as possible to the original 17th century manuscript, I'm typesetting my chords as voices: top note stem up, other notes stem down as a separate voice. However, I have a chord <<{d4}\\ {<g, c>4}>> in which the top d ends up to the left of the lower chord. But I want it typeset to the
right. How can I achieve this?