Different hand positions create completely different sounds. A flat-palm slap on the surface makes a sharp crack. Cupping the hands traps air and makes a deeper plop. A sweeping motion sends a spray with a softer shushing sound. A group of women playing together layers all these sounds into complex, interlocking rhythms — patterns that weave around each other so that each player's part fits perfectly with all the others.
Learning water music begins in childhood and takes years to master. Girls learn by watching their mothers and aunts, copying hand movements slowly, then gradually fitting into the group patterns. The knowledge passes down through families and communities without written music — entirely by ear and by watching, a process called oral tradition.
The Banks Islands group, in the north of Vanuatu, is where this tradition has its deepest roots. Water music is performed at celebrations, ceremonies and community gatherings. Watching a skilled group perform is mesmerising: the women move in synchrony, the rhythms build and shift, and the whole river seems to be singing.
Water music has been recognised internationally as a remarkable cultural heritage. Musicians and ethnomusicologists — scientists who study music from around the world — travel to the Banks Islands specifically to hear it. It is a reminder that musical instruments do not need to be manufactured; sometimes the most extraordinary music comes from something as simple as a river.