A Pulitzer Prize finalist for his landmark biography of Johann Sebastian Bach and the former director of Germany’s renowned Leipzig Bach-Archiv, Christoph Wolff has towered for decades as the world’s preeminent authority on the great composer.

The longtime Harvard professor, whose first appearance in Kansas City drew a capacity crowd to the Library seven years ago, joins the Bach Aria Soloists, providing commentary and insight into Bach’s life and works throughout the ensemble’s musical presentation.

Among other selections, the event will feature Bach’s Partita No. 1 in B minor for Violin, Toccata in D for harpsichord, and recitatives and arias from Cantata No. 204.

Wolff’s 2007 appearance at the Library also accompanied a Bach Aria Soloists concert. The chamber music ensemble — now in its 15th season — features founder, artistic director, and violinist Elizabeth Suh Lane; harpsichordist Elisa Williams Bickers; and guitarist Beau Bledsoe along with soprano Sarah Tannehill Anderson.