What is a trio sonata texture features which three main voices?

A trio sonata typically features a texture characterized by three main voices: two melodic instruments and a continuo part, usually played by keyboard and bass instruments. The two melodic voices often engage in counterpoint, creating a rich interplay of harmonies and melodies. The continuo provides harmonic support and rhythmic foundation, allowing for a cohesive yet dynamic musical structure. This texture enables both dialogue and contrast between the voices, highlighting their individual and collective roles within the composition.