Dawn & Dusk (2023) is an abstract exploration of the temporal space between dawn and dusk and how the dual nature of light varies on a microscopic scale through the vibrations of photons, oscillations of electromagnetic waves, and refraction and reflexion light properties. Through creative programming (Processing, Java, OSC, Chuck) Dawn & Dusk (2023) uses experimentally color gradients (cosine gradients) in abstract geometric shapes that vary dynamically to the sound of generative music that is fed back by certain visual aspects. The piece is divided into two parts: the first one (Dawn) where the perception of color, shape and rhythm is explored through the vibration of photons in different geometric fields, and the last one (Dusk) where electromagnetic waves oscillate and dance to the sound of music, generating a reactive audio choreography. Dawn & Dusk (2023) is a generative study of the interplay between color gradients and musical scales as performative elements in abstract experimental animation through the use of creative programming. In the first part (Dawn) the musical piece explores the musical scales in a rhythmic and percussive way through pseudo-random melodies. On the other hand, the second part (Dusk) uses various sinusoidal waves (SinOSc, TriOsc, ​​PulseOSc, SqrOsc, SawOsc) with frequency, amplitude and phase parameters that vary dynamically over time. The music has been generated by creative programming (Chuck) where the frequencies, amplitudes, phases and oscillations in the audio synthesis are decided from the visual properties (position and 3D transformation) of the abstract geometric shapes.