Essential Technique for Band - Bb Trumpet 3 by HAL LEONARD Save 31% $12.99 $8.99 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Essential Technique for Band Book 3 further develops music skills for intermediate and advanced musicians. Book 3 takes students through multiple key centers, individual studies, and a variety of styles of music.