Lord Raptor: Can Someone Explain? This Never Made Sense To Me

Lore says he was born in 1889. He's described as a charismatic young rocker who kills himself and 100 of his fans during his last performance. And then he gets resurrected by Ozom and continues as a zombie rockstar.

But that timeline doesn't make sense to me. There was no rock as we know it in the late 19th century/really early 20th century.

Someone please make this make sense.