I agree with Donny, playing under pressure brings the most out a musician. It’s that certain something that brings your soul/emotions, into your music. Once you have it, you never lose it.

Lyrics have always been my problem. Played the song many times at home with small improvement. Played the same song twice under pressure, an audience, and the lyrics and chords were memorized. Ten years latter I still know the lyrics – and the chords just seem to come without thinking.

OT, have you ever, in a half dream sang a song through with no problem, only to wake up and find you still did not know the lyrics to the song?
John C.