Organist's feet

Have you seen an organist
who uses her left foot only for playing pedals?
Her right foot safely rests on the swell pedal.
I have an organist friend who has this habit.
Often they develop
rather substantial virtuosity of the active foot 
but the other simply atrophies.

The other day I asked my friend,
"Why do you play like this?"
To this she replied,
​"I don't know how to use both feet.
The pedaling becomes very complicated
and now it's either toe or heel of the left foot.
Toe on the sharps and heel on the others."

"You're right", said I,
"But think how much more complex music
​could you play with both feet?
Your technique and range would double at least."

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Ausra's Harmony Exercise:
​Diatonic Sequence in Bb Major: I-I7-IV

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