Music is often described as mathematical due to its relationship with concepts like the harmonic series and the golden ratio. For those interested in exploring this connection further, online lectures and textbooks are recommended, with resources like Wikipedia providing foundational information. The discussion also touches on the perception of mathematical principles, such as the golden ratio, in art and architecture, prompting questions about how these concepts are identified in visual works. While some argue that understanding the mathematics behind music is essential, others believe that practical musicianship does not necessarily require mathematical knowledge.