Ja, Jag, Jo Pronunciation Options?

[DogePamyuPamyu]

So I was listening to a song and I noticed that the singer pronounces ja/jag/jo with the English 'J' sound... Is this a dialect? Is it widely accepted? Here's the link... The verse with "Ja, jag..." starts at 0:37 and the "Jo" is the first word of the next stanza.

http://youtu.be/em8mYUKQUEw?t=37s

Can it be pronounced that way? Is there a reason she does this if it isn't pronounced like that at all?

[Berniebud]

I rarely ever hear native Swedes pronounce it that way, when they do, it's usually because they're clenching their teeth.

[DogePamyuPamyu]

Oh... Okay well maybe she was clenching her teeth while singing haha. Thanks.

[Deliciae]

Seems like she's trying to make it sound a bit "harder" to go with the beat. Artistic licence. None of the Swedes I know pronounce it quite like that.