Mark Ronson, who produced Back to Black leaves Golders Green Crematorium after attending the funeral of Amy Winehouse in north London. (AP Photo/Lefteris Pitarakis)
The Grammy award-winning album was also No. 1 in 2006 when it was released. Also on Sunday, Winehouse's debut album "Frank" reached No. 5.
Winehouse has also left a trove of unreleased music, but no decision has been made about whether it will be released.
The 27-year-old soul diva, who had struggled with drug and alcohol addiction, was found dead of unknown causes at her London home on July 23.
