Help Please help!! My music doesn't sound right.

[twilighter]

Ok, so I was listening to my music earlier and it sound fine, but then I went to play some songs again and now all my music sound like the chipmunks are singing the songs. I thought it was my music app (poweramp), but despite me deleting the app and re-installing, its still happening. Then I tried another music player, and i'm getting the same thing. I went into settings but no matter what I do, my music doesn't sound normal. Please help!!

 

[willxander3]

Speakers or headphones?

 

[tube517]

Pull the battery and reboot phone.