The online music store released its top-selling albums and singles Tuesday, though they declined to release actual sales figures.

Maroon 5's sophomore album, "It Won't Be Soon Before Long," was the No. 1 seller on the site, followed by Amy Winehouse's "Back to Black" and Kanye West's "Graduation." Winehouse and West are also leaders heading into the 50th annual Grammy Awards -- he has eight nominations, she has six.

Rounding out the top five best-selling albums were "American Idol" alum Chris Daughtry's band's self-titled debut, "Daughtry," and "Coco" by newcomer Colbie Caillat, who has the hit "Bubbly."

Fergie came in first and fifth place in single sales. Her hit "Big Girls Don't Cry" was the top-selling single of the year for iTunes, while "Glamorous" finished in fifth. Gwen Stefani's "The Sweet Escape" came in second place, followed by Plain White T's "Hey There Delilah" and Avril Lavigne's "Girlfriend."