Six in the morning. Brisbane is only just waking, and the first organ phrase is already sounding in the Concert Hall of the Queensland Performing Arts Centre.
At the instrument is the Australian organist and composer Calvin Bowman. Ahead of him lie sixteen hours of music: preludes, fugues, chorale settings, fantasias and concertos by Johann Sebastian Bach.
This is not an ordinary concert programme. It is an immersion in a musical universe created over nearly half a century of the composer's life. One work gives way to another, and gradually the familiar sense of individual pieces, of hours, and even of the performer himself fades away.
What remains is the music — and the man who becomes its conduit.
One day — the whole of Bach's organ universe
13 September 2026 as part of the Brisbane Festival, Calvin Bowman performed the complete collection of organ works by Johann Sebastian Bach at QPAC. The concert began at 6:00 and continued for about sixteen hours with scheduled intervals. Listeners were free to enter and leave the hall throughout the day.
The programme brought together works written for worship, for teaching, for solemn occasions and for the display of virtuoso mastery. Alongside the well-known toccatas, preludes and fugues, rarely performed chorale settings and short pieces were heard.
This was Bowman's third confirmed one-day Bach marathon. He had previously performed the complete organ cycle in a single day in 2009 at the Melbourne International Arts Festival, and in 2022 at MONA FOMA in Tasmania. Also, in 1995 the musician publicly presented the complete collection of Bach's organ works, though there is no confirmation that the entire cycle was then performed within a single day.
So the event in Brisbane became not a repetition of a former experience, but a new encounter with music from which one cannot return the same person.
The organist plays with his whole body
The organ demands almost impossible coordination from the performer.
The hands work simultaneously on several manuals, the feet carry an independent line on the pedal keyboard, and the stops change the timbral architecture of the work. The musician must read several voices at once, hold the form of the composition and continuously control the space of sound.
During a sixteen-hour performance, physical endurance becomes part of the interpretation. It is not enough to know the notes — one must distribute one's strength so that the final works retain the same clarity, attention and inner composure as the morning ones.
Bowman recounted that the main lesson of his previous marathons lay precisely in the ability to budget his energy. After performing the cycle in 2009, he needed roughly a week to recover fully.
But this strain is not the goal. It merely shows the price of uninterrupted presence in the music.
An Architecture That Sounds
The complete cycle was heard on the great organ built by Johannes Klais Orgelbau. The instrument was built in 1985–1986, its voicing was completed in January 1987, and the first season of organ concerts took place in May of that same year.
The organ has four manuals and 88 speaking stops. It can move from an almost weightless whisper to a sonic force that is felt not only by the ear but by the whole body.
Each stop has its own timbre, and their combinations create entire sonic spaces. In one work the organ resembles human breathing, in another a choir, an orchestra or the ringing of bells. Sometimes individual voices diverge in different directions, then come together again in a shared harmonic structure.
Bach reveals the possibilities of this instrument like an architect: he builds lines, symmetries, tensions and points of equilibrium. Only instead of stone and light he uses time and sound.
When Familiar Time Disappears
Sixteen hours of music cannot be perceived as an ordinary concert.
At the beginning the listener still distinguishes the works, follows the themes and recognises familiar intonations. Then the music begins to change the sense of time. Repetitions, the return of chorale melodies and the movement of polyphonic voices create their own rhythm — more drawn out than the usual course of the day.
Bowman described his earlier experience of performing the complete cycle as a state of deep concentration in which Bach's music felt almost like the presence of the composer himself.
This is the musician's personal experience, not a claim that can be confirmed scientifically. But it helps to understand the nature of such marathons: sustained attention can change a person's relationship with time, the body and the sounding space.
The performer no longer moves from one work to another. He remains inside a single musical world.
From Complexity to Silence
Bach's polyphony is built on a multitude of independent voices.
Each moves along its own trajectory. One begins the theme, another answers, a third enters later and changes the direction of the musical flow. Not one voice dissolves into another — and yet together they form a single whole system.
This is one of the most astonishing features of Bach's music: unity arises not through the destruction of differences, but thanks to their precise interaction.
Even Orgelbüchlein — the "Little Organ Book" — was conceived not merely as a collection of short pieces. A cycle tied to the church year, it served at once as a space for spiritual reflection and as a practical guide for the beginning organist.
The more complex the musical fabric becomes, the more clearly its inner order is felt. A multitude of lines does not create chaos — it leads to a silence that arises not instead of sound, but within it.
Not a Record, but a Service to Music
A sixteen-hour performance is easy to imagine as a test of human capabilities. But to reduce it to a record would be too simple.
Bowman did not try to speed up the music or turn Bach into an athletic achievement. His main task remained to preserve the character of each work — from an intimate chorale meditation to a monumental prelude and fugue.
In this marathon it is not the duration itself that matters. What matters is the musician's readiness to give the work everything it needs: attention, body, memory, breath and time.
Thus the performer ceases to stand between the composer and the listener. He becomes part of a shared musical system — the living space through which the work once again enters the world.
What did the music remind us of today?
That wholeness does not require sameness.
In a fugue each voice keeps its own direction, yet hears the others. That is precisely why complexity turns into harmony, and a multitude of independent movements into a single form.
So it is in life as well. Unity arises not when one voice drowns out the others, but when each takes its own place and takes part in the shared sound.
For sixteen hours Calvin Bowman performed Bach's music. But gradually the boundary between the work, the instrument and the man became almost indistinguishable.
The music passed through the organist's hands and feet, through the air of the hall, the pipes of the organ and the attention of the listeners. All of this was no longer separate elements of a concert, but a single event.
Perhaps in the deepest moments we are not simply listening to music and observing it from the outside. We remember that we ourselves belong to its movement.
