"Sound waves?" Rocket repeated, tail twitching in a curious sort of manner as he paused in what he was doing--digging through junk of course like the animal that he was at core--ears flicking then perking a bit. "And I doubt they call this place the junk pile for nothing, flier," he added with a bit of a scoff, straightening up and sliding down the pile a bit with careful skill.

"What are you collecting all this junk for anyway? You can't bloody just be cleaning things," he muttered as he started searching through the pile again...maybe attempting to find some useful looking items to split with the flier.