Which style of jazz is characterized by its fast tempo and technical virtuosity?

The correct answer is Bebop, which is a style of jazz that emerged in the 1940s and is known for its fast tempo, complex chord progressions, and emphasis on instrumental virtuosity. Bebop shifted the focus of jazz from danceable swing music to a form that prioritized artistic expression and musical complexity.

Musicians such as Charlie Parker and Dizzy Gillespie were pivotal figures in this genre, often incorporating rapid tempos and intricate melodies that required significant technical skill. This contrasts with styles such as Swing, which is more oriented toward ensemble playing and dance rhythms, and Cool Jazz, which features a more relaxed tempo and smoother textures. Modal Jazz, on the other hand, focuses on modal scales and improvisation rather than the technical speed characteristic of Bebop. Thus, Bebop stands out for its emphasis on fast-paced improvisation and high-level musicianship, making it the correct choice.