Ero e Leandro or Qual ti riveggio, oh Dio, HWV 150

Ero e Leandro, also known after its first line as Qual ti reveggio, oh Dio (HWV 150), is a 1707 Italian-language cantata by George Frideric Handel, composed during his stay in Rome to a libretto believed to be written by Cardinal Pietro Ottoboni. It is a reworking of the Greek myth of Hero and Leander, with the soprano soloist taking the role of Hero. In it, Hero finds her love, Leander, drowned, tears out her hair, thus symbolically rejecting the beauty which had led to Leander's fascination with her (and thus his death), then drowns herself. It is composed for a soprano solo (with no other singers), and a small orchestra consisting of two oboes, and two string sections: a concertino of solo violin and violoncello, and a concerto grosso made up of two violins, a viola, and continuo. In Ero e Leandro, Recitatives alternate with arias, as was normal at the period for not only cantatas, but oratorios and operas as well; however, unusually, Ero e Leandro ends with a recitative, instead of an aria.