All songs are comprehended on the 70’s period. The design process implies studying the song in both, its lyrics and its melody. The composition could follow any of them as they develop through time, but it would be much better if you consider both interweaved. It is fundamental to recognize tempo breaks, entrance of certain instruments and chorus, modulation changes, peak moments, clue situations, etc. to translate them to a linear chart, which will be the base of your proposal. To differentiate the diverse components you can use forms (geometrical, organic, etc.) and colors, using them as solid elements or diffused and mixed (we are not using textures for this purpose).