Patrick made his Lyric Opera of Chicago debut in the roles of Arturo in Lucia di Lammermoor and the First Philistine in Samson et Dalila during the 2003-04 season, going on to create the role of Dino (the groom) in the Lyric Opera's World Premiere of A Wedding, composed by William Bolcom and directed by Robert Altman the follow season. Other honors that season included appearing as soloist in Lyric Opera's 50th Anniversary Golden Jubilee Concert.

Since making his professional debut as Camille in Fargo-Moorhead Opera's 2000 production of The Merry Widow, Patrick has triumphed in productions of Don Giovanni with Seattle Opera and Boston Baroque, Susannah and Eugene Onegin with Virginia Opera, Madama Butterfly with Lyrique-en-Mer Festival, Belle-Ile, France, The Bartered Bride with Opera Boston, The Mikado in St. Louis, Arizona, and Indianapolis, A Midsummer Night's Dream with Chicago Opera Theater, The Magic Flute with Orlando Opera and Lyric Opera of San Antonio, La Traviata with Lyric Opera of San Antonio, Dialogues of the Carmelites with Glimmerglass Opera, and Don Giovanni and Die Fledermaus with the Lyric Opera Center of Lyric Opera of Chicago. His Tamino in Theatre de la Jeune Lune's Minneapolis production of The Magic Flute (hailed as the Best Production of the Year by the Minneapolis Star Tribune) was filmed for the Lincoln Center Arts Library's permanent collection. Most recently Patrick reprised Nanki-Poo in his Indianapolis Opera debut, returned to the roster of the Lyric Opera of Chicago to cover Nanki-Poo, sang the tenor lead in Ricky Ian Gordon's Rappahannock County with Virginia Opera, and made his American debut as Pinkerton with Syracuse Opera and Nevada Opera. This season Patrick debuts as Cavaradossi in Syracuse Opera's Tosca, and makes house debuts with Opera Birmingham (Pinkerton) and Opera on the James (Tamino).

Patrick has worked closely with the leading composers of our time, creating and performing works alongside Dominick Argento, William Bolcom, Carlisle Floyd, Ricky Ian Gordon, Libby Larsen, Kirke Mechem and Stephen Paulus. Recent highlight include creating leading roles in William Bolcom's A Wedding with Lyric Opera of Chicago, Ricky Ian Gordon's Rappahannock County with Virginia Opera and Kirke Mechem's John Brown with Lyric Opera Kansas City.

Equally at home on the concert stage, Patrick Miller's oratorio and concert performances include works of Beethoven, Bernstein, Britten, Handel, Haydn, Mozart, Schubert and Lehar. Important recent orchestral debuts for Patrick include the Boston Pops and the Seattle Symphony under the baton of Gerard Schwartz. He has sung at such international festivals as the Covent Garden Festival, the Prague Spring Festival, the Oregon Bach Festival, and the Flanders Festival.

Patrick has been the recipient of numerous regional honors, including winner of the American Opera Society Competition, Regional finalist of the Metropolitan Opera National Council Auditions and finalist for the Connecticut Opera Competition. Mr. Miller spent two summers studying Italian and Bel Canto singing with Raina Kabaivanska at the prestigious Accademia Musicale Chigiana in Siena, Italy. Mr. Miller holds a Master's Degree in Vocal Performance from the University of Minnesota and a Performance Certificate in Opera from Boston University's Opera Institute.

Patrick joined the Metropolitan Opera artistic department as a full-time tenor chorister in 2016. He has sung over 1000 performances as chorister, over 100 performances as a soloist, and appeared on numerous Met in HD international broadcasts. Patrick also sang on the Met's Grammy-winning recordings of The Ring Cycle and Akhnaten.