In contrast to the works of Boyz II Men, Babyface and similar artists, other R&B artists and groups from this same period began adding even more of a hip-hop sound to their work, like the innovative group Jodeci. The synthesizer-heavy rhythm tracks of new jack swing were replaced by grittier East Coast hip hop-inspired backing tracks, resulting in a genre labeled "hip hop soul" by Mary J. Blige and producer Sean Combs who also had mentored group Jodeci in the beginning and helped them with their unique look. The style became less popular by the end of the 1990s, but later experienced a resurgence.