As a Classical reading, Pulses is minimalist process made public. Reich's craft is not hidden in thematic transformation. It is in how the ensemble makes a repeated figure audible as form, tension, and harmonic field.

The opening half-minute establishes the process clearly: a steady pulse, bright attacks, and a held ensemble environment. The tempo sits around 136 BPM, but the pulse does not behave as a plain dance grid. It is a compositional engine.

From 0:33 through about 2:03, the form depends on perceptible process. Repetition stays close enough to itself that small differences become structural evidence. The listener hears phase-like strain, accent drift, and harmonic color as formal motion.

Around 2:03 and again near 3:00, Reich releases tension without changing the basic premise. That is the classical discipline of the passage. The material does not need contrast to develop; it changes consequence by changing density, spacing, and internal emphasis.

The late span after 3:51 shows the ensemble form at its most direct. Around 4:30, the force builds again, and near 5:00 the field gathers inside the same pulse. The writing asks performers and listeners to hold exactness long enough for perception to become the drama.

The cadence is by removal. Around 5:20, the system thins and the piece stops without a rhetorical closing gesture. The classical argument is complete because the process has been heard, inhabited, and then cut from view.