This video provides a visual and intuitive introduction to the Fourier Transform, explaining its core concept of decomposing signals into their constituent frequencies. It uses sound waves as a primary example and demonstrates how the Fourier Transform can "unmix" complex signals. The explanation builds from a visual analogy of wrapping a signal around a circle to the mathematical formulation involving complex exponentials and integrals. The video also briefly touches upon the applications of the Fourier Transform beyond sound, hinting at its broader significance in mathematics and physics.