Riddle for a Skiing Violinist

Here is a subset from my collection of 428 Pithy Thoughts, to help set the stage.

Man’s mind, once stretched by a new idea, never regains the original dimensions. – Oliver Wendell Holmes

For Musicians: Imagination creates reality. – Richard Wagner

Imagination is the beginning of creation. You imagine what you desire; you will what you imagine; and at last you create what you will. – George Bernard Shaw

Imagination plus innovation equals realization. – Denis Waitley

For Alpine Racers: You have brains in your head. You have feet in your shoes. You can steer yourself any direction you choose. – Dr. Seuss

I like nonsense, it wakes up the brain cells. Fantasy is a necessary ingredient to living. – Dr. Seuss 

Consider an experienced Alpine Racer who is also an accomplished Violinist.

Riddle: The violin has strings with 4 different frequencies. From low to high they are G, D, A, and E. If the G string represents powder and the E string represents ice, then what might the D and A strings represent? 

Consider: The Violinist uses their eyes, ears, the feel of the instrument in their hands with fingers in one hand measuring intervals and pitches in tune, while the other hand moves the bow across the strings, while playing music

Consider: The Alpine Racer uses their eyes, ears, the feel of four sharply tuned ski edges through their boots, with the task of skillfully accelerating the skis around gates, in various rhythms, on various surface conditions.

What physical and psychological similarities or differences can you identify in this comparison?