Mariah Carey goes on the offensive in her new single – "Obsessed" – taking on Eminem among others. The track is the first off of her album "Memoirs of an Imperfect Angel" due out Aug. 25. That release date means this 12th studio album by Mariah Carey just makes the new Aug. 31 cut-off for Grammy Awards eligibility.

Though Mariah has racked up 34 Grammy nominations (among female artists, second only to Aretha Franklin), she has managed only five wins. And none of those victories came in the top categories of album, record and song of the year.

The singer has always prided herself on her songwriting abilities. In "Obsessed," she wrote in a rap directed to Eminem, "Why are you so obsessed with me/ Boy I wanna know/ Lying that you're sexing me/ When everybody knows/ It's clear that you're upset with me."

While Eminem has said that he and Mariah were one-time lovers, she repeatedly has denied his claim. On his new album "Relapse," Eminem references Carey and her new husband, Nick Cannon, in a less-than-flattering light on the track "Bagpipes From Baghdad."

Over the years, Eminem has won nine Grammys but lost both of his bids for album and record of the year. As a songwriter, he has contended for song of the year only once. And he did not land a best new artist nod when he burst onto the music scene.

Mariah Carey was named best new artist in 1990 for her self-titled debut album. And she won best pop vocal, female, that year. Then, though her follow-up albums all went platinum, there was a Grammy Awards drought until her smash hit "The Emancipation of Mimi."

Mariah went into the 2005 Grammys with eight nominations but left with only three wins, in the R&B genre – contemporary album, song ("We Belong Together") and female vocal. The singer-songwriter lost the big prizes of album, record and song of the year to U2 and Green Day.