Anastasia’s Derek Klena Is Engaged Gotham Rex 7 years ago Anastasia’s Derek Klena Is Engaged The Anastasia star and former Fiyero in Wicked announced the news on Instagram. Share: What’s In Your Book? Anastasia’s Derek Klena Sings Through His Audition RepertoireDateJuly 11, 2017In relation toPlaybillPlaybill Mixtape: Anastasia’s Derek Klena and John Bolton Share Their Pre-Show PlaylistDateFebruary 15, 2018In relation toPlaybillAnastasia’s Derek Klena and Christy Altomare Sing ’In a Crowd of Thousands’ in New Music VideoDateOctober 26, 2017In relation toPlaybill