Yvonne Kenny when she replaced, with only four days' notice, the soprano scheduled to sing in an Opera Rara concert performance of Donizetti's "Rosmonda d'Inghilterra" at the Queen Elizabeth Hall. It was a triumph and the virtually unknown Kenny became an overnight star. She made her debut at the Royal Opera House the following year, in the premiere of Hans Werner Henze's "We Come to the River", later singing in Handel operas such as: "Semele", "Alcina", "Giulio Cesare", and such Mozart operas as: "Idomeneo", "Mitridate, re di Ponto", "La clemenza di Tito", "The Abduction from the Seraglio", "The Magic Flute". She also
Il Neo the composer). A "Berceuse" from this opera arranged by the composer for voice and piano was published by Bevilacqua in supplement to "Renascença" No. 1, 1904. There are 9 roles: 5 principal (soprano, mezzo-soprano, 2 tenors and bariton) and 3 secondary (2 sopranos, mezzo-soprano, tenor and bass), and a mixed chorus (SATB). The orchestra consists of piccoli, flutes, oboes, clarinets (in B), bassoons; trumpets (in F), trombone (in E), bass trombone; percussion; harp and strings. Il Neo Il Neo (La Mouche) is an opera in 1 act, 3 tableaux ("novelletta musicale in 3 piccoli quadri" — musical novelette in 3