Singing several notes on one vowel, used for vocal display in opera. 19th and 20th century composers such as Rachmaninoff and Ravel wrote entirely wordless pieces for voice under the generic title â€œvocaliseâ€.
Vocalise, Op. 34 No. 14 is a song by Sergei Rachmaninoff, published in 1912 as the last of his Fourteen Songs, Opus 34. Written for voice (soprano or tenor) with piano accompaniment, it contains no words, and is usually sung entirely to the vowel "ah". It was dedicated to soprano Antonina Nezhdanova.