I won't forget my first steel gig in a hurry, either.
I built my first steel (because I was skint) and on the day that I finished it, I took it to the gig.
I played lead guitar in a country trio (rhythm guitar, his wife singing, drum box, and me) , so they said to bring it along.
For some reason, I had tuned my steel to Eb9.
The guitar player had big hands, and a 12 string Aria that had a very thin neck.
So he detuned his guitar down 4 frets, and put a capo on the 4th fret (where the neck was a bit wider) to play back in regular tuning.
He also moved his capo around, to play in different keys, as he only knew how to play two chords, C and F.
My strat was in normal tuning, and I had got used to looking at where his capo was, and looking at if he was playing a C or an F, so that I would know what key we were in.
Now, throw in a newbie on steel, which was detuned a semitone, who was confused enough by the complexities of a PSG,
to be confronted by a guitar that was detuned two tones, with a capo which could be anywhere on the neck, with either a C chord or an F chord being played, and two seconds to determine the key, the result was chaos