If we break down the grammatical structure and parts of speech of each word, we can see that there are only two adjectives. Lucia and Nicholas are proper nouns, "the" and "and" are articles, "at" and "down" are prepositions, "followed" and "found are verbs, "sound", "piano" and "stairs" are nouns, and the only adjectives are "curious" and "melodic." I hope this helps!
