This is one of the finest examples of a cambiata voice I have come across in recent times. Inigo Byrne was a former cathedral chorister who left the choir at the time his voice was entering the early stages of change. His singing coach for this professional recording pitched the Mozart Ave Verum, not in its normal key of D major, but a fourth down in A major. This was not a deliberate attempt to be cambiata - but simply the correct pitch to get the best from the voice. This illustrates perfectly the principle that in cambiata singing, the song must fit the voice, not the voice the song. The second extract is the opening of the Enya song May it Be from Lord of the Rings. It's included because it captures the resonance of the cambiata tone that would be missing were the singer to be struggling to retain his treble voice. It was partly on the strength of this album, My World, (Belerion label) that we chose Inigo to feature in the Boys Keep Singing film Riding the Changes.

The first performance of this folk song is by a primary school boys' choir. The second is by trained cathedral choristers. A key point to note is that the primary school boys have unchanged voices, whereas the choristers, who on average are two years older, will have voices that have begun to change.

The Wulstan Atkins Memorial Lecture, Three Choirs Festival, Worcester 2011