Jeffrey Ambrosini has distinguished himself in a wide variety of operatic and concert repertoire including European singing engagements at the world famous Teatro La Fenice in Venice, a Radio Italiana 3 gala telecast with Alfredo Kraus, and the Lille Festival in Lille, France. He was recently a featured as a Heldentenor soloist in the 2009 concert for the Evelyn Lear and Thomas Stewart Emerging Singers Program for the Wagner Society of Washington, D.C.  Solo concerts in the U.S include The New World Symphony under the baton of Michael Tilson Thomas, The Fort Wayne Philharmonic, The Enid Symphony, Oklahoma City Philharmonic, Canterbury Chorale, Northeastern Pennsylvania Philharmonic, Woodstock Chamber Orchestra.

Opera Roles: Radames, Manrico, Don Jose, Alfredo in La Traviata, Prince in Rusalka, Tom Rakewell in The Rake's Progress, Tamino and the First Armored Man in The Magic Flute, Danilo in The Merry Widow, and Eisenstein in Die Fledermaus among others including dozens of operatic and oratorio Baritone roles.

Roles in Preparation: Tristan in Wagner's Tristan und Isolde; Parsifal, Lohengrin, Otello, Siegmund, Samson.

Opera Companies: Roanoke, Sarasota, Virginia, Schubert Opera, The Tampa Bay Performing Arts Center in the World Premier of Anton Copolla's Sacco and Vanzetti, Opera of the Hamptons, Treasure Coast Opera. In New York City with Operaworks, Dicapo Opera, New York Chamber Opera Theatre, Opera at the Academy, Opera Northeast, National Lyric Opera, Metro Lyric Opera and the Belleayre Music Festival.

Oratorio and Concert: Tenor soloist in The Messiah with The Fort Wayne Philharmonic, The Rückert Lieder of Mahler with the Woodstock Chamber Orchestra; Gateway Classical Music Society Concerts of New York in excerpts from Aida and Turandot; Manrico in Il Trovatore with the Woodstock Chamber Orchestra; Opera Gala with Soprano Leona Mitchell; tenor soloist Beethoven's Ninth Symphony. 2006 in the role of Aeneas in Dido and Aeneas with the OU Opera Theatre telecast on OETA.

Voice Faculty: Southern Nazarene University; Doctoral Fellow at the University of Oklahoma winner of both the Benton-Schmitt Award and Hoving Scholarship Award. Tulsa University and University of Central Oklahoma.

Education: University of Oklahoma-Doctoral Fellow; Oklahoma City University-Master's Degree; Oberlin College Conservatory-Bachelor of Music; Nassau Community College- Cum Laude Associates Degree; Brooklyn College Conservatory