هارمونی وکالی بسیار سخت و زیبا. روزی یوکو اونو، همسر جان لنون، در کنار جان لنون در حال نواختن آهنگ Moonlight Sonata از بتهوون بود که جان لنون از او پرسید آیا او می تواند آن را بکوارد(عقب گرد) بنوازد؟ بدین شکل جان لنون Because را نوشت.
Aah Because the world is round It turns me on Because the world is round
Aah Because the wind is high It blows my mind Because the wind is high
Aah Love is old, love is new Love is all, love is you
Because the sky is blue It makes me cry Because the sky is blue Aah
John Lennon – triple-tracked harmony vocals (middle register), guitar
Paul McCartney – triple-tracked harmony vocals (high register), bass
George Harrison – triple-tracked harmony vocals (low register), Moog synthesiser
George Martin – Baldwin electric harpsichord