Confused by the whole Skrillex/Deadmau5 beef? Here's the whole drama explained.

When Skrillex teamed up with Justin Bieber for "Where Are U Now," there was at least one person who didn't like the song. "Made the mistake of listening to this Jack U s--t  with Bieber assuming they at least did something cool...nope. What the f---k is this s---t?" Deadmau5 tweeted soon after the song was released.

Instead of firing back online, Skrillex kept quiet. But when asked about the comment in an interview, he responded saying, “I’ll always have love for Joel because he put me on at an early time, but he’s an a--hole. And everyone knows that, and he knows that. And that’s kinda his thing.” Later, he added that Deadmau5 personality was overshadowing his music.

Now, Deadmau5 is back with more to say using Twitter, tweeting: "At the end of the f---ing day, if I'm 'miserable/moody/negative' than that's just me dealing or not dealing with internal s--t. Yes I'm aware that I can be a f--ing diva. Yes I am aware [that] I have more than one complex. Very f---ing aware. The people you should really f---ing worry about, are the people who don't know it. So YES @Skrillex [I'm] SUPER SAD [I'm] not as cheerful, and super inspired by life as you. And I'm so SORRY I'm an a--hole. But how about you let me worry about that s---t."

Skrillex, for his part, has yet to respond.

Follow Emily on Twitter: @EmLaurence