Years later, in an April 2017 interview with LA Opus, Langan recalled telling the story during a rehearsal break at Carnegie Hall to Paul McCartney, who laughed and replied: "[That's the first time] The Beatles inspired someone to go into opera!
"[5] In a 2017 interview for BroadwayWorld, Langan recalls when he was a sophomore at New England Conservatory in 1974 and Met opera singer Maria Callas told him: "I will give you one piece of advice.
[10] Tim Page of The New York Times wrote of Langan's voice that it intoned a "deep, toffee-smooth" sound with "convincing interpretive abilities".
[5] The magazine Opera wrote that Langan's delivery of Mozart's "La vendetta" from The Marriage of Figaro under the direction of Nikolaus Harnoncourt (the recording of which was nominated for a Grammy Award on the Teldec label) was "absolutely revelatory ... with a vocal sheen that [has] never heard before".
[10] David Laviska of musicalcriticism.com wrote of Langan's performance of Friar Laurence in Gounod's Roméo et Juliette that he delivered it all in a "vibrant, ringing tone, polished phrasing, incisive diction, and convincing, unfussy acting" package.