The past decade has seen a steady evolution in the piano tuning industry, marked by the integration of technology, an upsurge of skilled technicians, and a shift in consumer preferences. As we delve into the subtleties of this craft and the key finds of the industry report, it is worth noting that the piano tuning industry, much like a well-tuned piano, has displayed an uncanny ability to harmonize the old with the new, the traditional with the modern, and the craft with science.

Starting from the very heart of the industry, the piano tuners themselves are the lifeline that keeps this trade alive. The industry report shows a significant rise in the number of piano tuners in the last decade. This is attributed largely to the democratization of knowledge and the rise of tuning schools, online courses, and apprenticeships, empowering enthusiasts and musicians to master this meticulous craft. The shift from the traditional apprenticeship model to a more formalized education represents the industry's adaptation to the changing socio-educational landscape, thus ensuring its continuity and growth.

However, the rise in the number of tuners does not automatically equate to an increase in quality. Tuning, at its core, is a delicate balance of art and science. It requires not just technical know-how but also an intuitive understanding of the uniqueness of each piano, much like a physician understanding the unique health nuances of a patient. Mere quantity of tuners thus needs to be complemented by quality, a fact highlighted by the report.

Moving to the question of 'what' is being tuned, consumer preferences have seen a swing towards digital pianos, a trend particularly seen in urban households constrained by space and budget. Digital pianos, while lacking the acoustic richness of their traditional counterparts, offer a remarkably close mimicry at a fraction of the cost and space. They also require less frequent tuning, making them a cost-effective choice. However, it is pertinent to note that the craft of tuning is best displayed in the realm of acoustic pianos, which, according to the industry report, have maintained a steady market presence, particularly in the professional and high-income consumer segment.

The 'where' of the industry has also seen a shift, with more tuners operating as mobile service providers rather than fixed-location services. The convenience of in-home tuning is a value proposition that appeals to many customers, particularly those with high-end acoustic pianos. This trend, however, does necessitate tuners to be technologically savvy and mobile-ready, a requirement that the current and upcoming generations of tuners are fulfilling ably.

When it comes to the 'how' of tuning, the industry report highlights the increasing role of technology. While the traditional tuning fork is still the tool of choice for many purists, electronic tuning devices have made significant inroads into the industry. These devices offer precise frequency measurement and allow for faster tuning. However, many in the industry argue that they cannot replicate the nuances that a skilled tuner can achieve with a tuning fork. It's a classic trade-off between precision and artistry, speed and depth, and represents the evolving dynamic in the industry.

The 'why' of piano tuning – the raison d'être – has remained unchanged over the centuries. The joy of playing, and listening to, a well-tuned piano is a universal pleasure. It transcends the changes in the industry, the evolution of technology, and the shift in market dynamics. It is the constant that inspires piano tuners to continue honing their craft, and it's what will ensure the future harmony of the piano tuning industry.

In conclusion, the piano tuning industry has proven its resilience and adaptability in the face of evolving market dynamics and technological advancements. Like a well-composed symphony, it has harmoniously integrated the old and the new, the traditional and the modern. The industry's ability to hold on to its core values while embracing change has placed it in good stead for a harmonious future. We look forward to watching this industry continue to create the music that enriches our lives.