BECAUSE (Lennon-McCartney) 1969 John's "Because" is about early days of his relationship with Yoko. The song's chord structure is inspired by Beethoven's "Moonlight Sonata" (Piano Sonata No. 14 In C Sharp Minor), which Yoko Ono would play on John's grand piano. Ah because the world is round it turns me on Because the world is round Ah because the wind is high is blows my mind Because the wind is high Ah love is old, love is new Love is old, love is you Because the sky is blue it makes me cry Because the sky is blue Ah ah ah ah