Rinaldo is an opera by George Frideric Handel (1685-1759), composed in 1711, and was the first Italian language opera written specifically for the London stage.
Here is an arrangement of the popular piece Lascia ch'io pianga (Almirena  act 2) for Classical Guitar.
With downloadable mp3 for audio help.  With tablature. Three pages, 2:09' min. Easy to Early Intermediate.