Complex sentence: The Choir of Saint Thomas Church Fifth Avenue has performed with Plácido Domingo and Jessye Norman, and took part in the premiere of Andrew Lloyd Webber's "Requiem".
Split into simpler sentences: The Choir of Saint Thomas Church Fifth Avenue has performed with famous musicians such as Plácido Domingo and Jessye Norman. They also took part in the premiere of Andrew Lloyd Webber's "Requiem".