The young Munday, gifted with a voice of beautiful tone, a charming manner, and a face "of dazzling fairness," obtained immediate success; but her attempt to embellish her solo singing with inappropriate tricks was condemned by critics.
She married, at Liverpool on 11 February 1806, James Salmon, organist of St. Peter's, Liverpool, whose father, James Salmon the elder (died 1827), was lay clerk of St. George's Chapel, Windsor, and whose brother William (1789–1858), after holding the same position, was lay clerk of Westminster and taught singing.
A critic in the Quarterly Musical Magazine, probably Richard Mackenzie Bacon, wrote in 1823 that "When I hear such a singer as Miss Stephens or Mrs. Salmon, the power of ductility seems carried to its utmost.
There are no roughnesses, no breaks—the metal is drawn out exactly, and if we could run it along between the finger and the thumb, or pass the nail over the surface, it would be as even, as smooth, and as polished to the touch as it is brilliant to the ear."
Henry Phillips wrote that when Thomas Lindsay Willman, the clarinettist, accompanied Mrs. Salmon, it was difficult at times to distinguish the voice from the instrument.
[1] Her daughter, also called Eliza, was born on 10 January 1807 in Liverpool and married Louis Hantute on 28 October 1826 in London.