Why was Bruckner so willing to revise, and be complaisant with his student's efforts to revise his works? The perfectionism of a man such as Bruckner no doubt had a great deal to do with it. Perfectionism in art can be a good thing, or a bad thing. In art, and life in general, perfection is a journey...it isn't a goal that can ever be reached. We are all full of mistakes, flaws great and small, in other words we are human. A masterpiece of any kind is defined by its imperfections (no matter how slight or great) as much as by its beauty. Bruckner appears to have been a compulsive man by nature, so he may have had little choice in the matter. His 9th symphony was, in some ways, a casualty of that compulsiveness in that while he had sketched and planned a 4th movement, he never completed it. But the three movements he did complete are a fitting tribute to his artistry, genius and mastery.
While there have been reconstructions by musicologists of the 4th movement, they are a curiosity. The completed symphonies of Brucker and three movements of this work are a wealth of great music. Any realization or reconstruction, no matter if done by a learned and sympathetic scholar, is but a commentary on the composer's music in question. Interesting in itself up to a point, and valid if taken in the right context, but unnecessary.
I. Feierlich, misterioso (Solemn and mysterious) - Per Bruckner's directions, the beginning of the symphony is shrouded in solemn mystery as the orchestra begins quietly and deeply. The beginning is in D minor, but this movement goes far afield as D-flat major makes an appearance after the opening bars, with E major and references to other keys abound in this vast first movement. It is in Bruckner's personal variation of traditional sonata form as themes are stated and developed over time. There is a series of climaxes, which resolve into further development of other themes. Bruckner can seem fragmentary with these climaxes, as they usually end with silence from the orchestra, but as with his sudden pauses when going to a different theme and his key changes, these methods create tension and expectation for what is to come. The movement ends with a final harmonically questioning climax that does not resolve completely, but points the way to what is to come.
II. Scherzo, Bewegt-lebhaft (rough, agitated - lively) - A scherzo that has been called brutal by some, it begins quietly with pizzicato strings until it loudly erupts with a simple rhythm that begins on the downbeat of the previous bar, and masks the time signature by heavily accenting each note of the rhythm in the woodwinds and brass and with down bows from the strings. The trio is opposite in feeling and provides a respite before the scherzo returns with a vengeance.
III. Adagio, Langsam, feierlich (slowly and solemnly) - Bruckner's harmonic waywardness continues in this last Adagio. The violins open with a B below middle C that swoops up to a C natural above middle C, a jump of a ninth. This movement also has several climaxes, along with music that sounds like fragments of music heard before, whether from this symphony or Bruckner's previous two symphonies. The final climax builds slowly, and ends with a horrible chord for full orchestra that contains the seven notes of the harmonic minor scale, a chord that was 'sanitized' in some of the editions of the symphony edited by a Bruckner pupil. The ensuing silence after this chord is almost deafening and it is an example of how silence is an integral part of music. There are some coarse descending notes from the brass, and the music makes a quiet end in the major.