thumb|250px|1901 publicity photo for [[The Emerald Isle]]
Isabel Emily Jay (17 October 1879 – 26 February 1927) was an English opera singer and actress, best known for her performances in soprano roles of the Savoy Operas with the D'Oyly Carte Opera Company and in Edwardian musical comedies. During Jay's career, picture postcards were immensely popular, and Jay was photographed for over 400 different postcards.
After studying at the Royal Academy of Music, Jay joined the D'Oyly Carte Opera Company in 1897, with whom she began singing principal roles immediately, becoming the company's leading soprano in 1899, where she played leading roles in comic operas including The Rose of Persia, The Pirates of Penzance, Patience, The Emerald Isle and Iolanthe. She married and left the company in 1902. She returned to the West End stage in 1903 and starred in eleven musicals over the ensuing years, including A Country Girl, The Cingalee, Véronique, The White Chrysanthemum, The Girl Behind the Counter, Miss Hook of Holland, King of Cadonia and The Balkan Princess. She retired in 1911 at age 31.
Life and career
Early life and D'Oyly Carte years
Jay was born in Wandsworth, London, the youngest child of John Wimburn Jay, an insurance officer, and his wife Isabelle Clara (Wicks). She was the great-granddaughter of John George Henry Jay (1770–1849), a musician and composer connected with the Royal Academy of Music. She began to sing in public at the age of twelve. She entered the Royal Academy of Music in 1895, where she studied piano and voice. In 1897, she was the first winner of the Gilbert R. Betjemann gold medal for operatic singing. While still at the Academy, she drew the attention of Helen Carte.
right|thumb|upright|As Mabel in Pirates
On leaving the Academy, in 1897, she joined the D'Oyly Carte Opera Company with a week-long trial at the Savoy Theatre, singing the part of Elsie Maynard in the first London revival of The Yeomen of the Guard. She immediately became principal soprano in a D'Oyly Carte touring company, playing the roles of Elsie, Phyllis in Iolanthe, Yum-Yum in The Mikado, Princess Lucilla Chloris in His Majesty, and later adding the roles of Aline in The Sorcerer, and Mabel in The Pirates of Penzance. A reviewer for The Era wrote of her Mabel: "Miss Isabel Jay's bright, alert acting and fascinating personality would have condoned many deficiencies. But in addition to winning all hearts by her freshness and earnestness, Miss Jay gave us a delightfully easy and accomplished rendering of her share of the score, and the way in which she used a very valuable voice told of sound training and keen intelligence."
Jay rejoined the main D'Oyly Carte company at the Savoy in 1898, briefly playing Gianetta and then Casilda in The Gondoliers, and soon took over the role of The Plaintiff in Trial by Jury, winning a favourable review in The Sunday Times. In early 1899, she created the small role of Aloës in The Lucky Star, and she then filled in for Ruth Vincent for 21 performances as Josephine in H.M.S. Pinafore, as well as performing again as The Plaintiff.
left|thumb|upright|In [[The White Chrysanthemum]]
Now the company's leading soprano, Jay played Mabel in Pirates (1900), again earning good notices, and the title role in the first London revival of Patience (1901). During the run, she was made an Associate of the Royal Academy of Music. She then created the roles of Lady Rose Pippin in The Emerald Isle (1901) and the Gipsy Woman in Ib and Little Christina (1901). She played Phyllis in the first London revival of Iolanthe (1901–1902). She left the company in 1902 to marry the African explorer Henry Shepherd Cavendish, who was later the 6th Baron Waterpark. During her career, more than 400 different postcards with Jay's image were issued.