Not the GP, but I can. I can play back songs in my head quite vividly or remember and replay how different people sound like, when it's coupled with a memory.
Since my imagination layers on top of my existing senses, I wonder if aphantasia is really about the (in)ability to induce sensory hallucinations at will (and to what extent). That's about the only way I can make sense of it personally, given my own subjective experience.
Sound is like images for me. An abstract concept you can reason about later but only experience in the moment.
Maybe it "looks" like a comic with only speech bubbles. It's still not the right image, because there is no image, but it also doesn't feel like a total void.