The wayward star has recently returned from a lengthy break in the Caribbean, where she composed several new songs.
However, Island believes that the demo tracks are too much of a departure from her acclaimed style.
An insider said: "Amy was very productive during her stay in St Lucia. She wrote a hell of a lot of songs, but the majority of them just aren't hitting the mark.
"She seems to have ditched her trademark vintage soul sound and is now heavily influenced by reggae."
The source claimed bosses from the label have told her that it is not a good idea to change her style to such an extent.
It was recently reported that the Back To Black star has now abandoned hope of salvaging her marriage to Blake Fielder-Civil, who is currently looking for a £5 million divorce settlement.
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