Mario Greiner in a denim shirt, smiling, with glasses and beard - performer singer actor

Mario Greiner


Find out about Mario’s most recent shows, gigs and aspirations in this section.



Working with Rob Schneider and Michael Lavine, Mario is excited to announce that he will be part of the 50 Key Stage Musicals concert series at 54Below - next to no other than Stephen Mo Hanan, Steve Ross, Paige Davis, Talia Suskauer and many more talented artists. Mario will sing the part of Marius in a number from Les Mis.

July 2023

Head over Heels Musical

Musidorus in Head over Heels

Working with award-winning New York Times acclaimed director Stephen Nachamie, Mario got cast in the leading role of Musidorus in Head over Heels. This production is music directed by Joshua Zecher-Ross. JZR has worked on over 100 productions in New York and in the United States as a music director, orchestrator and conductor.

April 2023

Live Laugh Lie - Musical by Sotsky and Vaquero

Johnny in Live, Laugh, Lie

Mario is delighted to announce his cast as Johnny in Live, Laugh, Lie - directed by Meghan E. Farley, who is currently the Associate director of SIX on broadway. The show was written by award winning composer Julio Vaquero, and incredible writer Aliza Sotsky, both NYU MFA musical theatre writing graduates. This production is music directed by Nick Sienkiewicz.

January 2023

Professional voice over reel

In addition to professional training by Andy Roth, Kristy Cates and Jonathan Appel, Mario has an updated voice over reel available, including different commercial styles, and a German-English commercial at the very end. Learn more.

November 2022

The Addams Family Musical

Fester in The Addams Family

November 18-20, Mario can be seen as Fester in The Addams Family in a production directed by Rob Schneider, in collaboration with musical director Miles Plant, and choreographer Catherine DeLuce. The show is being produced by the New York Film Academy. Learn more on Broadwayworld.

October, 2022

54below Logo


Mario is thrilled to announce that he will be performing a duet at IT TAKES TWO: BROADWAY’S EMOTIONAL ROLLERCOASTER at 54Below this October 5.

August, 2022

Logo of PCMT

Mario is continuing his studies at PCMT

After exploring a career in IT consulting at a big4 company during the pandemic, Mario is continuing his studies at the Professional Conservatory Of Musical Theatre at the New York Film Academy in August 2022.

August, 2022

King Charles in Pippin

Mario started rehearsals for his role as King Charles in the PCMT production of Pippin at Battery Pl in Manhattan. Unfortunately the show was cancelled due to the rise of the pandemic.

March, 2020

Wasp Woman Musical Workshop

Scientist Zinthrop in Wasp Woman Workshop

Based on the 1959 Roger Corman film "The Wasp Woman", Mario got cast as scientist Zinthrop in this comedy musical workshop, with music by Arthur Lafrentz Bacon, book & lyrics by Harris Doran.

February, 2020

Dirty Rotten Scoundrels

André in Dirty Rotten Scoundrels

One of Broadway's funniest musicals is back in the city, in a production of PCMT of the New York Film Academy. Mario is cast as André, a corrupt French police chief and the co-lead of the show, charming and funny.

October, 2019

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Let the journey begin: Mario comes to the big apple

In August 2019, Mario will begin his journey rigorous two-year conservatory at the Professional Conservatory of Musical Theatre at NYFA. The conservatory is known for its intense hands-on approach, including MainStage productions, stage work, as well as movie musical and camera work.

January, 2019