Clef is an NFT project that enables users to purchase on-chain music NFTs and remix their melodies to create entirely unique music NFTs. Clef has developed a music generating algorithm that issues NFT songs with a signature electronic sound. Players can generate a song by combining simple music elements, and songs can be blended together to create new tracks with a more advanced sound. Users can release their songs to the music chart, where songs compete for the listeners' approval. This is all powered by a smart economy that pays royalties to the owners of the most popular songs.