Night Only: Dillion Harper One

I need to verify if there's any official source that mentions "One Night Only" in relation to Dillion Harper. A quick search shows that the "One Night Only" event in 2000 was a charity concert, but not specifically tied to Dillion Harper. However, Dillion's story is part of the Pottermore universe, so maybe there's a fan event or a charity event that included his story.