Causa Nostrae Laetitiae From the abundant organ repertoire of Miguel Bernal Jimenez, this noble melody is a sublime declaration of love and dedication to the Blessed Virgin Mary, the cause of our joy. This is the first time in history, as far as we have records, that a performance of this piece is turned into an NFT, and this is the first church organ piece to be madre into a NFT. In addition, this NFT contains the only copy of the performance of the work. The file will be destroyed after mining, to make this NFT an absolutely unique piece.