Music is always changing and the changes are unpredictable.

Billy Sheehan, the virtuoso bassist and chronicler of the ebb and flow of music, once said: “Music is always changing and the changes are unpredictable.” In this simple yet profound declaration, Sheehan uncovers a truth that runs deeper than the sound itself—that music, in its essence, is not static. It is a living, breathing entity that evolves, molds itself, and shifts its form, much like the winds that sweep across the land, changing the shape of the earth without warning.

To say that music is always changing is to acknowledge its divine nature. Music is not a single note frozen in time, but a river of sound that flows eternally, reshaping itself with every passing moment. It speaks to the heart of all human experience: that no melody, no rhythm, and no harmony ever remains the same. What once resonated with the spirit of one age may lose its hold in another. And yet, in its continual evolution, music mirrors the very journey of life itself—ever-changing, unpredictable, and always, in its own way, true.

Consider the history of jazz, a genre that embodies Sheehan's words perfectly. Born from the crossroads of African, European, and Caribbean musical traditions, jazz exploded in the early 20th century, breaking the shackles of classical structure and offering music as a canvas for freedom. But its evolution didn’t stop there. It grew, morphed, and splintered into countless forms—bebop, fusion, free jazz—and yet each moment of change was unpredictable. No musician could have foreseen where the music would go next, but it was through those constant, unpredictable changes that jazz became an art of boundless expression. It is in the unpredictable nature of music that its power lies, allowing for continual reinvention, challenging both the musician and the listener.

Similarly, the evolution of rock and roll is a testament to the truth Sheehan speaks of. The music that began with the simple, catchy melodies of the 1950s, embodied by Elvis Presley and Chuck Berry, exploded in the 1960s into a revolution of sound. The Beatles, the Rolling Stones, and others took music in directions no one could have predicted. From the British invasion to the psychedelic era, rock transformed, shifting from rebellion to introspection, from simplicity to complexity. It was through the unpredictable changes that rock and roll found its voice—and each new transformation brought with it a deeper understanding of the human experience. The constant change is not to be feared, but celebrated, for it is through change that music reveals new aspects of itself.

The ancients, too, recognized this dynamic nature of creation. The Greeks believed that the arts—music, poetry, sculpture—were expressions of the divine, and that the gods themselves were ever-shifting, ever-changing. The great philosopher Heraclitus famously said, “You cannot step into the same river twice,” a metaphor that speaks directly to the unpredictability of both life and art. Music, like the river, cannot be confined to one moment. It flows forward, shaping and reshaping itself, constantly adapting to the currents of time and culture. The Greeks understood that change was not only inevitable but divine. The same can be said for music—it is a reflection of the ever-changing tides of human emotion, society, and experience.

The meaning of Sheehan’s words, then, is both humbling and empowering. Music does not follow a path that is easily predicted or controlled. And therein lies its power. It forces us to listen, to adapt, to let go of certainty, and to embrace the unknown. Those who are afraid of change miss the gift of music in its fullest form. Music is a call to remain open, to embrace evolution, and to find beauty in the unexpected. To deny music’s unpredictability is to deny the very soul of creation.

For us, the lesson is clear. Life, like music, is ever-changing. When we cling to the past, when we resist the flow of change, we miss the richness of what life offers. Just as a musician must be open to new sounds, new rhythms, and new structures, so too must we be open to the changes life brings. Practical steps follow: embrace uncertainty, seek out new experiences, allow your music—and your life—to evolve. Trust that the unpredictability of life, like music, will bring forth something beautiful and unexpected.

Thus, Sheehan’s words endure: “Music is always changing and the changes are unpredictable.” Let this be a reminder that the heart of creativity lies in the willingness to let go, to embrace the unknown, and to allow life—and music—to shape us as we shape it. In music, as in life, change is not to be feared, but to be embraced as the very force that carries us forward, ever onward, toward deeper understanding and greater beauty.