Sound ..how do you draw it?

I've been thinking about sound & how you draw it.
You can represent sound by drawing things associated with sound such as musical instruments, insects & birds & other animals. Musical instruments make sounds, make music so therefore are to do with sound. Each particular instrument has a specific sound.
What about making sound into something physical? A physical manifestation of sound.
Speaking of birds & sound being physical, I instantly thought of Songbird, a marvel character...

Songbird uses a form of technology that converts sound into a malleable form of energy that has a physical form and mass, termed 'solid sound'. She easily can create simple 3D sound mass constructions.