a generative set of heuristics that support generation of a set of chords in a chord scheme or many different sets of chords in the same or different tonics that achieve a same form function and which thus have similar associated emotional/musical connotations, and chord spacer heuristics that space out temporally any number of generated chords across a defined window of musical time;

a tag that describes compositional heuristics of its respective Form Atom;

a chord list in a local tonic where the chord list defines branching structures giving options for generation of different chords from the local tonic, and

a progression descriptor in combination with a form function that expresses musically one of a question, an answer and a statement, wherein:

the metadata creates a meta-map of a chord scheme for a musical section that is linkable to one or more secondary Form Atoms to generate a musical generative composition in which, upon automated selection and concatenation of musically related Form Atoms by a computing system operationally arranged to identify and select different Form Atoms, musical good form is established in the musical generative composition based on compatible heuristics, chord lists and progression descriptors of each Form Atoms selected for adjacent concatenation, and wherein:

musical good form is compliant with conventions in accepted musical composition and musical good form contrasts with musical bad form in which there is no obvious or known linking that makes any discernible musical sense between successive musical phrases and in which musical bad form fails to communicate structure because sound signals cannot logically be processed into a sensually resolvable anticipatory order.