Before diving into the albums, one must understand the technical context. Toto’s records—especially those produced in the late 1970s and early 1980s by engineers like Al Schmitt, Tom Knox, and later Elliot Scheiner—are textbooks of dynamic range. Take "Rosanna" (1982) or "Africa" (1982): The harmonic complexity of the Porcaro shuffle, the layered synth pads, and Lukather’s saturated guitar tones require bandwidth.