Actually, 99.9999 % of physics is easy to picture. On a very banal level, you see it all around you every day - lets not get picky about lost senses, please.
As for harmony and things musical, the physicist, to his credit and undoing sometimes, is trying to get to the math (read, THE BOTTOM, or THE WAY, or THE WHY or CAUSE AND EFFECT, or THE SCIENCE) only. Please - there are exceptions, being very general here.
All kinds of sound modeling can be done this way. Check out the new and next generation versions of amplifiers for guitars if you doubt this. The scientist gave the engineers more than just their ears to base the new modeling technology on.
About the remaining percentage: In some very serious scientific circles, it is now believed that a combining, synthesis or even basic understanding of the relationships between quantum and traditional theory in experiment will result in the erasure of life as we know it. I've read on it a bit and I see some valid points that do indeed point to a possible closure of everything we know if a successful measure is achieved.
Let's hope the MAD Scientists of the world really think about what they're doing in future.
As for the Mudcat physics: It is. Just a different point of perspective, thank God.