The 69-year-old actor said that the mock rehearsals for KBC has began as the show is ready to go on air from September 7.
"The crowning glory is the session at Salim-Sulaiman's recording studio later at night to record a song for KBC, and my extreme hesitation in doing so for it is a moment filled with immense self consciousness," Bachchan posted on his blog.
"... Salim-Sulaiman, made me nervous and anxious and yes, the butterflies which have now found permanent residence within my intestines. However, this must be said, the experience tonight has been most rewarding and fruitful," he added.
Bachchan also said that he prefers to record songs with composer Aadesh Shrivastava because they have had several jamming sessions and that he also enjoys a rapport with Vishal-Shekhar.
"I think it becomes relevant and important to be in a state of complete comfort before performing any creative act. It is for me. And when the environ is not conducive, the soul is absent. I have not done much with Salim-Sulaiman, and that always comes in the way when they are in charge."
"I opt often for Aadesh Shrivastava, because many a long night has been spent there in uninhibited jamming. There is that comfort within the studios of Vishal-Shekhar," Bachchan said.