Christian Sineath was a charming Rosabella, her lyric soprano lovely in ‘Somebody, Somewhere’ in the opening scene. She evinced tenderness in Rosabella’s duets with Tony, and anger and passion in her duet with Joe at the end of the first Act. Sineath credibly portrayed Rosabella’s naïveté, honesty and sincerity as she gradually warmed to Tony and ultimately falls in love with him.
— David Rice, Classical Source (Rosabella in Loesser's The Most Happy Fella)
Sineath was superb in Lauretta’s ‘O mio babbino caro’ from Gianni Schicchi.
— Victor Wheeler, Classical Source
Christian Sineath as Rhonda spiced up the stage of The Sanford Meisner Theatre as the would-be seductress of Isobel’s boyfriend and business partner, Irwin.
— Harry Forbes, Backstage (David Hare's The Secret Rapture)
Christian Sineath is a performer with whom to be reckoned. Shining in ‘You Are Woman, I Am Man,’ then changing gears dramatically with ‘Don’t Rain on My Parade...’
— Metropolis (Fanny Bryce in Styne & Merrill's Funny Girl)
Christian Sineath has a lyric soprano of uncommon beauty, but she’s equally adept at putting over a blazing vaudeville turn like the pre-feminist comic anthem ‘Fifty-Fifty.’
— Steve Row, CVNC (Kyte, Marvin & Pearle's Tintypes)