The Clarion Choir was formed in 2006 and made their Lincoln Center debut in 2011, performing Bach Chorales as part of the White Light Festival. The Choir has a focus on Baroque and Classical repertoire, often performing together with the renowned period-instrument ensemble The Clarion Orchestra. But over the last decade, they have also expanded into later literature, including the choral music of Rachmaninoff and his contemporaries and newly-composed works. In 2014, the choir gave the New York premiere of a lost Russian masterwork from the 1920s Passion Week by Maximilian Steinberg; and in 2016 they premiered the work in Moscow, St. Petersburg,and London. Their performances were featured on PBS, and their recording of Passion Week, the Choir's debut recording, received nominations for a GRAMMY® and for BBC Music Magazine's Choral Award. The Choir has since performed and recorded other works from this period, such as Kastalsky's Memory Eternal, which debuted at #1 on the Billboard Classical charts, and Kastalsky's Requiem, which received 'Editor's Choice' in Gramophone. Over a two-year span in 2023 and 2024, the Choir embarked on a project to perform Rachmaninoff's complete cycle of choral works in celebration of the composer's 150th birthday. This was a rare feat that was featured in the New York Times and BBC Music Magazine and which culminated with a performance of his Vespers at Carnegie Hall. Their recently-released recording of the Vespers was also nominated for a GRAMMY® for Best Choral Performance. 

The Choir enjoys special partnerships with The English Concert and their music director Harry Bicket, as well as with the celebrated music program of the Metropolitan Museum of Art, Met Live Arts. The Choir has joined The English Concert for several of their annual presentations of Handel operas and oratorios on tour, such as Handel’s Semele (2019) and Solomon (2023). They have performed in venues such as the Auditorio Nacional de Música in Madrid, the Barbican Centre in London, Cal Performances in Berkeley, Théatre des Champs Elysée in Paris, LA Opera, and Carnegie Hall. As part of the Met Live Arts series, The Clarion Choir has presented eight Renaissance and early-Baroque programs in recent years in the Medieval Sculpture Hall and the Met Cloisters. The Choir has also collaborated with other notable artists and ensembles such as the Orchestra of St. Luke’s, Leonard Slatkin, Susan Graham, Isabel Leonard, and Madonna at the 2018 Met Gala.