Recitative accompagnato is a type of recitative used in opera and other vocal music that is accompanied by instrumental music, usually by an orchestra or a small ensemble. Unlike simple recitative, which is typically accompanied by only a continuo instrument like a harp or a harpsichord (essentially a chordal instrument that provides harmonic support), recitative accompagnato features more elaborate orchestral support.
In recitative accompagnato, the orchestra plays a more significant role in shaping the mood and emotional content of the vocal line, often responding to the singer's phrases and enhancing the drama of the scene. This style allows for greater expressiveness and can include shifts in dynamics and orchestral texture to support the narrative of the opera.
Overall, recitative accompagnato strikes a balance between the rhythmic speech-like quality of recitative and the more lyrical, expressive quality of aria. It's commonly used in moments of heightened emotion or important dramatic developments within an opera.