Adele reportedly wants to ensure her new record is perfect in every way.

The 26-year-old singer hasn't released an LP since her Grammy-winning 2011 offering 21.

But according to songwriter Diane Warren, who has worked with Cher, Mariah Carey and Celine Dion in the past, Adele is working hard on crafting the perfect sounds for her third studio album.

'I flew to London to work on new stuff with Adele last year,' Diane told UK newspaper The Sun.

'We did some great songs but I don't know if they've made the record. I don't think anybody does.

'She has a mind of her own. Nobody rushes Adele or makes decisions for her, which is probably why she's a great artist. She wants to get it right.'

In 2011 Adele underwent surgery to remove a polyp from her vocal chords.

Apparently the procedure went so well, her voice remains flawless as she records tracks for her forthcoming LP.

'She was singing her a*s off when I was in the studio. Her voice was spectacular,' Diane noted.

Adele is said to have been working with a number of famed musicians on the highly secretive album.

UK newspaper The Mirror previously reported Adele is hitting the studio once again with the help of One Republic rocker Ryan Tedder, who's written hits for Beyoncé Knowles and Leona Lewis.

'She is delighted to have such a talented writer and performer working with her and for Ryan it is a massive privilege,' a source told the outlet.

The pair were reportedly been holed up in Air Studios in Hampstead, North London for a good portion of the summer.