This CLIL didactic unit designed by Roberto San Juan García focuses on Berlioz's Harold in Italy. The unit aims to help students differentiate between instrument families, understand how instruments produce sound, develop active listening skills, and understand programmatic music. Students will review string, woodwind, brass, and percussion instruments. They will also learn about programmatic music and active listening. The unit incorporates vocabulary learning and activities like musical analysis and creative listening. It is organized over five 50-minute classes involving individual work, small groups, and presentations.