Two Keys at One Time?

One of my tasks during my undergraduate studies was to memorize the C major Prelude from Bach’s Well-tempered Klavier (Book 1). My theory teacher for harmony, Dr. Stefan Young, wanted us to play the piece in block chords and sing the bass line with the harmonic analysis as our lyrics. When I had Dr. Young for counterpoint the next semester and he again assigned the same piece, I was given the additional complicating task of playing the piece not just in any key, but in any two keys at the same time. Dr. Young wanted me to play the right hand in one key while playing the left hand in another. It’s a real mind-bending experiment to try, even if it doesn’t always sound so great…

When I pulled out the hymnal yesterday to practice, I stumbled upon “There Is a Balm in Gilead.” The melody basically is a G major chord, so I thought what if I harmonize it in F major instead. There are a few other key shifts here, but the harmonic rhythm remains slow so that you have time to consider the unexpected colors.

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