Our example from Volume 4 uses an approach which becomes more and more common in later volumes: a basic tumbao followed by a series of variations designed to develop the skill of "controlled improvisation" and to be able to invent variations without sacrificing time-keeping  accuracy or rhythmic feel.

Variation A (tumbao 1)

Audio - Full Speed

Audio - Slow Motion

Variation B (tumbao 2)

Audio - Full Speed

Audio - Slow Motion

Variation C (tumbao 3)

Audio - Full Speed

Audio - Slow Motion

Variation D (tumbao 4)

Audio - Full Speed

Audio - Slow Motion