Brass playing techniques involve various methods to produce sound and control pitch on instruments like the trumpet, trombone, and tuba. Key techniques include proper embouchure, which is the way a player shapes their lips, and breath support, which involves using the diaphragm to provide a steady airflow. Another important aspect is articulation, which refers to how notes are started and ended. Players use techniques like tonguing to create clear note beginnings. Additionally, mastering slurring allows for smooth transitions between notes, enhancing musical expression and fluidity in performance.