15 structural archetypes derived from 405 films. Each archetype is defined by five parameters borrowed from Hindustani classical music, a system built on the idea that melody is not just sound but emotional territory. We extended this logic to narrative structure: screen time replaces note duration, dramatic registers replace musical registers, and the characteristic phrase of a raaga becomes the beat trajectory of a story. The result is a structural grammar for film that is precise enough to classify and legible enough to write from.
In music: In Hindustani classical music, the vadi is the most important note of a raaga, the one the melody keeps returning to, the note that gives the raaga its fundamental character.
In story: The emotional register with the most screen time. The vadi tells you what a story is fundamentally about: whether it is a story of pursuit, reversal, crisis, incitement, or revelation.
In music: The samvadi is the vadi's consonant partner, always a fourth or fifth away. It complements and supports without displacing the dominant note.
In story: The secondary structural engine. The samvadi provides contrast and complicates the vadi, often determining the specific character of a story within its family. Two stories can share the same vadi but feel very different because of their samvadi.
In music: The graha is the note on which a classical composition begins, the first structural commitment, setting the register from which everything unfolds.
In story: The register of the first beat. Whether a story opens in stability (Sa), disruption (Ri), or crisis (Pa) sets a structural contract with the audience about what kind of world they are entering and what has already happened before the frame.
In music: The nyasa is the note on which a melodic phrase comes to rest, not necessarily the final note of the piece, but the note that signals a phrase is complete. In a raaga, the nyasa determines whether a phrase feels resolved or suspended.
In story: The register of the final beat. The nyasa determines resolution level: full resolution (Sa'/Ni), mid-register tension (Pa/Dha/Ma), or irresolution (Ri/Ga/Sa). It is the structural decision that most determines how an audience leaves the cinema.
In music: The pakad is the short melodic phrase that fingerprints a raaga. A trained listener hears the pakad and immediately knows which raaga is being played, even before the full composition unfolds. It is the raaga's signature movement through its own scale.
In story: The trajectory modifier: the beat movement pattern that distinguishes stories within the same archetype family. Two films can share the same vadi, samvadi, graha, and nyasa, yet feel structurally different because one Dwells in a single register while another Rebounds or Returns. The pakad is what separates variants of the same archetype.
Stories in the Ga-Dominant family live in the act of doing. The process of pursuit, not the reversals or crises along the way, is the primary narrative substance.
Stories in the Ma-Dominant family are driven by plot machinery. Reversals, twists, and shifting ground are the story's primary language. Whether triumphant or tragic, Ma-Dominant films are about the experience of the ground shifting beneath the protagonist.
Stories in the Pa-Dominant family are defined by sustained darkness. Crisis is not a single beat but a condition the protagonist inhabits for an extended period.
Stories in the Ri-Dominant family are defined by a disruption that never fully leaves the room. The inciting event, the wound, the mystery, the displacement, retains structural weight throughout the story rather than receding after Act 1.
There is only one Dha-Dominant archetype in the library, a reflection of how rare it is for revelation to structurally dominate a story rather than serve as a single scene.
This classification framework was developed by the Quanten Arc research team through structural analysis of 405 films across Drama, Thriller, Action, Horror, Comedy, Romance, Adventure, Mystery, Science Fiction, and Fantasy. Each film was manually segmented into narrative beats and scored on the five Hindustani classical music parameters.
The rule-based classifier was derived from the most statistically significant parameter combinations observed across the corpus. The framework is descriptive, not prescriptive: it identifies structural patterns in completed works and does not claim that all strong films follow these patterns.
Film counts and IMDb averages are derived from the 405-film Quanten Arc library. Browse all titles to explore individual narrative analyses.