Elektra hip-hop artists Pete Rock and C.L. Smooth have filed suit against manager Edward O. Ferrell and his Manhattan-based Untouchables Entertainment firm, claiming negligence plus breach of contract and fiduciary duty in the handling of their affairs.The suit, filed Monday in New York Supreme Court, claims Ferrell failed to render accountings and pay royalties, despite demands for same by Rock and Smooth. Also, the duo said management failed to advise them of more than $ 100,000 in performing opportunities. Rock and Smooth, filing under their respective legal names, Peter Phillips and Corey Penn, have enjoyed significant success in the rap arena. After debuting with their “All Souled Out” EP, they released 1992′s “Macca and the Soul Brother” album. Also contained in the duo’s suit are claims by Rock that he has not been paid for his services as a producer on a variety of rap releases, although payments have been made to Ferrell’s firm.