When can A soloist can display his virtuosity to the fullest?

A soloist can display their virtuosity to the fullest during solo performances or concertos where they have the spotlight and can showcase technical skill and expressiveness. Recitals or competitive performances also provide opportunities for soloists to demonstrate their mastery of their instrument and interpretation of the music. Additionally, specific passages in a piece designed for showcasing agility and technical prowess allow them to shine. Ultimately, the context and repertoire play crucial roles in enabling a soloist to fully exhibit their virtuosity.