HK singer stole Ayu's song!

[elepop]

I was watching Miss Asia 2004 pageant yesterday in my chinese channel. After the break, they introduced a female singer and performed for the pageant. I was doing my homework so i wasn't really paying attention... until i heard the EXACT same beat as Ayu's 'End Roll' and it's THE SAME BEAT. My mom didn't believed me, so i took my A BEST album and my CD player. After hearing it, she said it was exactely like Ayu's song too.

Is it stealing someone else's song? I mean, it's not the first time. I heard other chinese singer sing a song that has 'Slave 4 U' from Britney's beat and Justin's first single beat too. Do they even have the right to do that?