The Methodology

About GenreFix

Powered by The Structural Ear — a classification system built around what music actually sounds like.

The Problem

Open your music library and look at the genre tags. Chances are you'll find half your collection filed under "Pop," a quarter under "Rock," and a stubborn pile under "Alternative" that could mean almost anything. These tags weren't assigned by anyone listening closely to the music — they were assigned by record labels chasing radio formats, by streaming services optimizing for mood-based playlists, or by metadata services pulling whatever label a release happened to ship with decades ago. None of it was built to answer the question a real listener actually has: what does this music sound like, and what else in my library sounds like it?

GenreFix exists to answer that question properly. Built on a classification methodology called The Structural Ear, it identifies genre based on the actual architecture of the music — its instrumentation, its rhythmic and harmonic grammar, the way it's built — rather than the marketing language that happened to get stapled to it. The result is a library organized the way your ear actually hears it.

Below are the sixteen classifications The Structural Ear uses to organize all music, along with what defines each one and how many genres exist within it.

ClassicalSymphonicFolkCountryBluesJazzR&BRockPopMetalHip-HopRapElectronicWorldChristmasChristian
The Sixteen Classifications
Classical

Classical music is defined by composed, through-written structure performed according to a fixed score, where the architecture of the piece — not improvisation, not personality — is the primary listening experience. It spans everything from a solo cello suite to a full opera, organized not by era but by the physical and structural form the composition takes.

8 genres within Classical
Symphonic

Symphonic music takes the orchestral palette of Classical music and puts it to work outside the concert hall — scoring films, games, and theatrical productions where music exists to support a visual or dramatic narrative rather than stand on its own. It shares Classical's instrumentation but not its purpose.

4 genres within Symphonic
Folk

Folk music began as music made by and for ordinary people, passed along by ear rather than by score, built around acoustic instrumentation and a directness between performer and listener that survives even as the genre moved from front porches to concert stages.

4 genres within Folk
Country

Country music grew out of the folk and gospel traditions of the American South and Appalachia, distinguished by its storytelling lyricism, characteristic vocal twang, and an instrumental palette built around guitar, fiddle, steel, and (depending on the era) increasing degrees of studio polish.

6 genres within Country
Blues

Blues music began in the Mississippi Delta as a vocal and guitar tradition built on a specific harmonic structure — the twelve-bar form and the bent, "blue" notes that give the genre its name — used to express hardship and longing in a way that became the structural foundation for nearly every popular American genre that followed it.

5 genres within Blues
Jazz

Jazz is defined by improvisation built on top of structured harmonic frameworks — musicians making real-time decisions within a chord progression everyone in the room understands, ranging from tightly arranged big-band swing to the loosest free improvisation.

8 genres within Jazz
R&B

R&B took the vocal intensity of gospel and the rhythmic drive of the blues and pointed both at popular song structure, prioritizing vocal performance and groove-based rhythm in a way that has continuously reinvented itself from doo-wop through funk through contemporary soul.

6 genres within R&B
Rock

Rock is built around the electric guitar, drum kit, and bass as its core architecture, with a song structure descended from blues and rockabilly that has fractured into more distinct sub-genres than almost any other classification as it absorbed punk, grunge, and a dozen other movements over seven decades.

12 genres within Rock
Pop

Pop music is defined less by a specific sound than by an intent — songs engineered for maximum accessibility and broad appeal, prioritizing hook and production polish over genre purity, which is exactly why it absorbs influence from every other classification on this list.

4 genres within Pop
Metal

Metal pushed Rock's volume, distortion, and intensity to their structural extreme, building a classification defined by heavily amplified guitar architecture, aggressive rhythmic drive, and vocal styles ranging from melodic to harshly extreme.

8 genres within Metal
Hip-Hop

Hip-Hop is a producer's genre at its core — defined by the beat, the sample, and the groove architecture built underneath everything else, the instrumental and production foundation upon which Rap's vocal tradition is built.

5 genres within Hip-Hop
Rap

Rap is defined by its vocal delivery — rhythmic, rhyme-driven speech performed over a beat — distinct from Hip-Hop's production focus and unified by cadence and lyricism rather than any single underlying sound.

4 genres within Rap
Electronic

Electronic music is defined by its means of production rather than any single sound — built primarily on synthesizers, drum machines, and studio production tools rather than traditionally performed instruments, spanning everything from ambient to the dance floor.

5 genres within Electronic
World

World gathers the regional and traditional musics whose structural grammar is defined by geography and cultural tradition rather than fitting neatly into the other fifteen classifications — Reggae's offbeat, Latin's clave, Indian classical's raga, the café traditions of European cities — each one a complete musical system in its own right.

16 genres within World
Christmas

Christmas is not a sound of its own but a seasonal overlay that sits on top of every other classification — a Rock band's Christmas album is still structurally Rock, just routed here because its listening function (the holiday season) outweighs its structural identity for the purpose of organizing a library around how and when you actually want to hear it.

16 genres within Christmas
Christian

Christian music is defined by devotional or worship function rather than any single structural sound, spanning genres from contemporary praise music to gospel-rooted vocal traditions to Christian rock and rap — unified by purpose rather than architecture, the same way Christmas is.

8 genres within Christian