Friends of Amy Winehouse fear she may never sing again.

Friends fear the singer, who was hospitalized last weekend with a chest infection, has damaged her voice through partying and may never record another album.

Click for photos of Amy Winehouse's brushes with the law.

Record bosses allegedly claim work on the follow-up to her award-winning "Back to Black" album is "going slower than hoped" because of her health problems.

However a spokesperson for the star insisted there was no need to worry.

"Amy isn't on a deadline with her album," he said. "She's in and out of the studio working. Amy's fine."

Click for photos of Amy Winehouse performing.

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