(kid!) ASL x Pianist! Reader

While strolling through town in their mischeveous adventures the three siblings come across a very enchanting sound and find themselves at the end of a street as they follow the melody, bringing them to your house. A small peek in immediately gives away their presence as their bland curiosity is too big to ignore the matter and run away from the possibility of being caught red-handed. They find however that a pianist's soul is far more kind than they expected it to be...