Deep sigh

I'm sitting on the organ bench. About 3 lines into my piece when I accidentally hit the wrong note, panic set in and I feel great sorrow for myself. I start to remember that although I seemed to be able to perform this piece at home from the beginning until the end without stopping, I have actually never attempted to play it without looking at my fingers and I have no reason to believe it will be any different this time.

Just moments ago as I started messing up this Duo by Antonio de Cabezon, I realized that it was just me, the music, the instrument, my colleagues all around me, and my listeners gathered at Vilnius University St John's church. No one could save the situation but me. To get the matter back into my hands I'm desperately trying to find the right note in the left hand written in the bass clef which I started reading just 8 months before. Unsuccessful attempt to find my place on the keyboard produced more frantic movements of my hands. Suddenly I remember what my teacher emphasized before this concert, "Know how each episode starts and ends." Luckily I manage to move to the beginning of the next episode somehow without breaking the flow of music too much. Nevertheless, more mistakes, this time in the right hand, and then... silence of about 10 long seconds which seemed to pass longer than 10 minutes, followed by my deep sigh.

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Ausra's Harmony Exercise:
​Transposing Sequence in G Minor: IV-vii6-i