Anthony first worked as a partner of the Beverly Hills entertainment law firm, Rosenfeld, Kassoy, & Kraus, with clients such as Rick Rubin, The Sugarcubes, The Pixies, Alice in Chains, Ozzy Osbourne, Guns N' Roses, Soundgarden, The Go-Go's, Kiss, The Eagles,[1] and Mother Love Bone.

She was appointed president of Sony Music Group in 2005.She played a pivotal role in the signing of key artists such as Pearl Jam, Aerosmith, Rage Against the Machine, and The Offspring.

[3] In 2006, she left Sony and founded 7H Entertainment, a consulting and management agency with clients that included Pearl Jam, Prince, Black Sabbath & Ozzy Osbourne, Bjork, Soundgarden[1] and Macy Gray.

[4] Among her responsibilities, she oversees the company's Commercial Services Division which includes sales, live events, label merchandising, college marketing and fan and consumer engagement.

[4] In 2014, Anthony topped Billboard's Women in Music list, credited with reviving the Island and Def Jam record labels, and helping to reshape the company's strategy for the marketplace.