Miley Cyrus bitter about Rebecca Black

New pop feud: Miley Cyrus vs. Rebecca Black. "It should be harder to be an artist," Cyrus told the Kyle and Jackie O radio show in an interview about her June concert tour stop in Australia when asked about young YouTube sensation Black, 13. "You shouldn't just be able to put a song on YouTube and go out on tour."

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Black's original Friday song video is approaching 70 million views. And her new acoustic version of the song has more than 1 million.

Other Miley insights from the interview:

* "I'm definitely not coming to Australia single."

* "I do not Tweet, I do not social network, I try to stay out of it... for me, I complain enough about people knowing too much about my private life, so to go out there and exploit myself would be silly and hypocritical of what I stand for."

* "I don't lip-sync. I would rather someone say I sang like crap than have people see me lip-sync."

* "I mess up. There you go. But if you live your life trying to be perfect, you don't really live your life ever."