As the mare, whom had now introduced herself as Nivalia, helped him back to his hooves, Sound seemed to slowly calm down, only to look to the superhero when Nivalia introduced him, whom then went on to lecture Sound on how the name 'Potato Ponie' was spelt. Which... didn't seem to matter, since 'Ponie' was pronounced exactly the same as 'Pony'. Sound couldn't think of how often he'd be writing the name down, frankly. He didn't write many letters to people, save for his family, and the occasional one or two friends.
Oh, that's right, Sound still needed to introduce himself. He took a deep breath, still trying to calm his nerves a little, and deciding to try and let this moment be his first impression, rather than the one before.
Still feeling a little shaky, however, he simply raised a shaky hoof to give a feeble wave, and simply said "...S-Sound...". Alright, not all that good a first impression, but still better than being on the floor with a bird-foul stained rag on his face, screaming like he was falling off a cliff.