Mother currently handles the bulk of the business, including the teenage celebrity title Sneak and Magic FM.
The review is understood to incorporate the established music magazines Mojo and Smash Hits! and the rock title Kerrang! among others.
Big City Radio, handled by Karmarama, is not included in the review.
The review follows the restructure of the company's marketing department in March, when the group marketing chief, Malcolm Cox, left after 14 years.
Separately, Emap's chief executive, Tim Schoonmaker, departed earlier this year and was replaced by Tom Moloney.
Emap Performance's marketing has subsequently been decentralised and the individual brand teams have been charged with controlling the marketing of their specific areas.
Emap's TV properties comprise The Box and QTV, while its other radio responsibilities include Kiss 100.
Sneak is one of Emap Performance's newest titles launched with advertising through Mother as a younger version of the sister title Heat. It is aimed at 12- to 15-year-old girls, and uses the strapline: "Gossip to go."