Answer:
Only two backbones and thousands of ribs.
I work when I play and play when I work.
Being able to interpret the letters on this screen proves that you have this quality.
What stays on the ground but never gets dirty?
My first is an insect; my second is a border; my whole puts the face in a tuneful disorder.
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?