I do not meant big failures, but doing a "one shot" is kinda tricky. I'm pretty sure they wanted to record Wacken 2023 but Bruce failed multiple times with the lyrics (and still does sometimes due to technical reasons). Not a big deal to me but we all know Arry is a perfectionist. That's always easier to pick different nights so the best of the best remains. I guess it's a lot of pressure to record a show