Op. 95 is in F minor. It ends in F major. The distance between those two keys, measured in terms of the notes they contain, is exactly one pitch. Where that pitch changes — and in which voice — is one of the most precisely controlled moments in the quartet.
Minor-key works that end in the major are common in the classical and early romantic repertoire. The simplest version of this — a single final chord brightened from minor to major — is so conventional it has a name. Op. 95 does something more deliberate: the entire coda is organised around the arrival of F major, prepared step by step across the movement's final section. The listener can hear it approaching — or rather, can hear that something is resolving, even before it becomes audible what the resolution will be. By the time the major mode arrives unambiguously, it has been approaching for some time. The surprise is not that the key changes but that its arrival feels, retrospectively, inevitable.
The structural difference between F minor and F major is the third scale degree. In F minor, that note is A♭. In F major, it is A♮. Every other note in the two scales is identical. The harmonic world of F minor — the darkness, the compressed tension that the quartet has inhabited across three movements — exists because of a single semitone. The question Op. 95 poses, across its entire length, is what it would take to raise that note.
In the final movement, that question is answered. The A♭ that has been present throughout the quartet is eventually replaced by A♮. Where that replacement occurs, in which voice, at which moment, and in what harmonic context — these are the questions the analysis addresses precisely. The answer is specific to within a single measure and a single beat.
"The entire quartet can be heard as a preparation for a single semitone shift. The analysis locates exactly where it happens."
For a listener without score or theory, the arrival of F major in the final movement is heard as a brightening — a lifting of the atmosphere that has characterised everything preceding it. The tempo accelerates. The texture lightens. The four movements' worth of harmonic tension releases into something that sounds, if not exactly joyful, then at least unburdened.
The coda of the fourth movement drives toward this ending with an urgency quite unlike anything earlier in the quartet. The earlier movements are compact and tightly controlled; the fourth movement's coda is propulsive in a way that suggests the music has been waiting a long time to arrive where it is going.
The final bars are in F major without qualification. The closing chord is full, harmonically unambiguous, and settled. After a quartet that has spent nearly all of its length avoiding this kind of stable arrival — evading resolutions, reinterpreting cadences, modulating to unexpected destinations — the ending is almost startlingly direct. It answers the opening's ambiguity not with further complexity but with simplicity.
The shift from F minor to F major in the fourth movement is a performance decision before it is a structural fact. The score specifies A♮; the ensemble decides when the listener first understands that something fundamental has changed. In the final coda, once the major mode is unambiguous, the interpretive challenge is sustaining the tempo and energy through to the final chord without allowing the release of harmonic tension to become a release of physical energy. The ending should feel earned, not relieved.
Performers consistently describe the fourth movement's coda as one of the most satisfying sections of the quartet to play precisely because the harmonic destination is, at last, clear. After three movements of formal and tonal compression, the coda's straightforwardness is not a simplification — it is the resolution of everything that came before.
The analytical guide traces the preparation for the major-mode ending bar by bar, identifying the exact moment — the single note in a single voice — where the quartet's fundamental harmonic question is answered.
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