You searched for: “libretto”
libretto
The words of a dramatic musical work; such as, an opera including both the spoken and the parts that are sung.

From Italian, literally "little book" from libro, "book", from Latin liber.

This entry is located in the following unit: libr-, libel + (page 1)
Word Entries at Get Words: “libretto”
libretto (s) (noun), librettos; libretti (pl)
The text of an exciting and emotional dramatic work: Jill studied the libretto and memorized her part before the rehearsals for the musical started the following week.
This entry is located in the following unit: Italian words in English (page 2)