Abstract: There is provided a method for determining the musical notes associated with an amino acid sequence, the musical periods of the sequence, the lengths of the notes, and the tone quality of the notes through the retroaction of the whole set of amino acids and using that information to regulate the biosynthesis of the protein. The amino acids that build a protein emit a signal of quantum nature at a certain frequency. Following the properties of this signal, the frequency is transposed into a musical note. This discovery has numerous applications since one can then deduce from the amino acid sequence of a protein a sequence of notes composing the melody that will act to stimulate or inhibit its synthesis inside an organism, wherefrom one can in addition delimit its biological functions.