'Back to Black' received positive reviews from most music critics, earning praise for its classicist soul influences, Salaam Remi and Mark Ronson's production, and Winehouse's songwriting and emotive singing style. At the 50th Annual Grammy Awards ceremony, 'Back to Black' won five awards, tying the record (with Lauryn Hill, Alicia Keys, Beyoncé Knowles, Norah Jones, and Alison Krauss) for the second-most awards won by a female artist in a single ceremony. The album won Best Pop Vocal Album, while 'Rehab' won Best Female Pop Vocal Performance, Song of the Year and Record of the Year with Amy Winehouse winning Best New Artist. The album was also nominated for Album of the Year. To date, 'Back to Black' has sold over 10 million copies worldwide.