The student's work is well-structured, with clear divisions into sections such as introduction, background information, Pythagorean scales, Fourier analysis, conclusion, references, and appendices. The body of the work is further subdivided, providing clarity in exploring different phases. The topic of the Internal Assessment is clearly stated and explained in the introduction, along with a general description of the student's approach. The conclusion effectively summarizes the outcomes and responds to the aim of the exploration. The exploration is clear and understandable throughout, with logical linking of consequent parts. The use of technology, such as MATLAB, is clearly indicated and explained. Additionally, the presence of graphs, tables, and diagrams in appropriate places, as well as the length of the exploration falling within the accepted range, further contribute to the quality of the work.