Her singing has been referred to as "achingly alluring", "dramatic" and "meltingly beautiful." Other reviews have mentioned her "golden tone" and "amazing voice". A striking physical and dramatic presence, she has been described as "entrancing", "formidable," and a "showstopper."

Kerry Walsh has a repertoire encompassing a tremendous range of musical styles. The Juilliard trained flutist and singer has been heard on recordings, film and television soundtracks performing everything from jazz, pop and world music through symphonic literature and contemporary opera. She often combines dance, flute and theatrical elements in her operatic, contemporary and concert performances. Her five octave vocal range, improvisational and harmonic skills, ability to reproduce various styles and broad palette of vocal timbre provide limitless possibilities, both in recording and on stage.