Bach’s second partita offers five dance movements with the final movement - the Chaconne - surpassing them all. Longer than all of the others combined, it encompasses some of the most intense music ever written, as Bach repeats the bass line 64 times - moving from stark intensity to luminous lightness, then returning with renewed gravity.

Missy Mazzoli’s "Dissolve, O My Heart" is inspired by Bach’s legendary Chaconne.

"Dissolve, O my Heart begins with the first chord of Bach's Chaconne, a now-iconic d minor chord, and spins out from there into an off-kilter series of chords that doubles back on itself, collapses and ultimately dissolves in a torrent of fast passages. The only direct quote from the Partita is that first chord, which anchors the entire piece even as it threatens to spiral out of control. The title comes from an aria in the St. John's Passion, but has many potential interpretations." (Missy Mazzoli)