Grace Kelly (song) wrote "Grace Kelly" as a way of expressing his individuality. The song's melody is based on the aria "Largo al factotum", from the opera "The Barber of Seville" by Gioachino Rossini. The song received positive reviews from music critics. Heather Phares from AllMusic wrote a positive review for the song, stating that "Mika's singles are his most charming moments, including the instant sunshine of "Grace Kelly," which crams tap-dancing rhythms, filmic dialogue, Elton's pianos, Freddie's vocal harmonies, and Brian May's guitars into just over three minutes." Christian John Wikane from PopMatters wrote an extensive article about the comparisons between Mika
Westbrook-Rossini, Zürich Live 1986 swinging, and joyful it is breathtaking. ... Live, it's even tougher to grasp because there is no safety net, no alternate takes or editing to round out the rough spots. It's all one can do to take it in and not roll about the floor with your hands over your head, tears streaming in such blessed out delight you will cause your loved ones unnecessary worry. You'll listen for decades and still not comprehend the wonder if it. Yes, it is that good". All compositions by Gioachino Rossini with additional material by Mike Westbrook Westbrook-Rossini, Zürich Live 1986 Westbrook-Rossini, Zürich