[7][12] Jelencovich was a finalist and received a Lys Symonette Award in the 2008 Lotte Lenya Competition administered by the Kurt Weill Foundation for Music.

[7][13] Finalists were judged based on regional competitions, video submissions, and a live program required to include an opera/operetta aria, an American musical theater number, and two contrasting Kurt Weill selections.

[7] Jelencovich played Mrs. Nordstrom in the 2010 Opera Theatre of Saint Louis (OTSL) production of A Little Night Music, which was directed by fashion designer Isaac Mizrahi and starred Amy Irving.

[16] A member of OTSL's Gerdine Young Artist program,[17][18] Jelencovich also covered for the part of Violet Beauregard in the world premier of The Golden Ticket, an opera based on Roald Dahl’s book Charlie and the Chocolate Factory.

[25] Particular artist influences include Celine Dion and Whitney Houston in pop music; as well as Diana Damrau, Natalie Dessay and Joan Sutherland in opera.