A quality acoustic piano can last a century. Here's everything you need to know to protect your investment and keep it sounding its best — year round. An acoustic piano is not just an instrument. It's a living object — built from wood, felt, metal, and string — that breathes with the environment around it. It expands and contracts with humidity. It responds to temperature. It needs care, attention, and the occasional professional touch to stay at its best. The good news: cari