I want to experiment with a 10 levels of harmony style video on YouTube. And I thought to myself, maybe we can turn this into a challenge? The idea is to take the simple melody of Brahms' lullaby, and test out your harmonization skills to it. Since I am aiming for 10 levels, you are free to submit up to 2 or even 3 variations for this challenge. Simple harmony could be categorized as all notes that are within the key. Medium harmony would be basic key changing (notes that are related to the key)