Final answer:
Timing should be established before adding speed in classes with complex choreography.
Step-by-step explanation:
In classes with complex choreography, the first thing that should be established before adding speed is timing. Timing refers to the synchronization of movements and actions in relation to the music. The choreographer needs to ensure that the dancers are in sync with the beats and rhythm of the music before increasing the speed of the choreography. Once the timing is established, other elements such as formation, music, and costumes can be adjusted accordingly.