And then the sound disappeared

Today is the Corpus Christi festivity so I wanted to improvise on the Gregorian chant Lauda Sion Salvatore sequence. I used various modes and keys on my 4 manual Hauptwerk setup. At around 11:22 strangely the sound disappeared but the power was still on, the recording was still going on so I just kept playing on a silent keyboard. Can you notice it? Even though I couldn't hear a sound I tried to improvise something meaningful and finish on a Tutti registration. Hope you will enjoy it!

I'm playing this piece using Rotterdam Sint Laurenskerk sample set by Sonus Paradisi of Hauptwerk VPO. If you like my music making, you can support me on Patreon and get free organ CD's at https://patreon.com/secretsoforganplaying