Complex sentence: She sang at the 1998 Göttingen Handel Festival, performing vocal chamber music by Handel and Domenico Scarlatti accompanied by Jacob Heringman on vihuela, harpsichordist Ludger Rémy and cellist Katie Rietman, singing arias from Handel's "Sosarme" and "Tamerlano".
Split into simpler sentences: She sang at the 1998 Göttinger Händel-Festspiele in Göttingen, performing vocal chamber music of Handel and Domenico Scarlatti accompanied by Jacob Heringman on vihuela, Ludger Rémy on harpsichord and Katie Rietman on cello. During the Chamber Concert of the festival, she sang arias from Handel's "Sosarme" and "Tamerlano".