Questions in Fazbear Nights Trilogy

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how to get the "Skill... Issue...?" in fazbear nights 1?

I am making a new project with the new tjoc models if you like the project I will publish it
i found golden freddy in my door and it gave me the "it's me" my lights were flickering. it went dark en then he stood infront me, then i got teleported into a long hall and got send back to the menu
please expain
I've questioned this after seeing it several times in gamers playing this, including Markiplier, but is it a glitch, or is there a reason why Freddy randomly does his music cue during the night instead of only when the power goes out like usual?