Bobi Céspedes, Rezos   Bobi Céspedes Rezos   Ms. Céspedes´ voice is supreme: powerful, full of strength even when she whispers. These arrangments, some involving Santeria orishas, are deeply rooted in both Afro Cuban and R&B traditions, what producer Greg Landau calls the "funkloric" approach. Ms. Céspedes, with her rich bottom range, and the band, featuring seasoned pianist/flautist Oriente Lopez, make it work.     The power of the tongue   By LI ROBBINS Special to The Globe and Mail Tuesday, August 5, 2003 - Page R2   Bobi Cespedes " The tongue makes you and the tongue breaks you," said Bobi Cespedes, with an almost saucy smile to accentuate the point. It´s a saying from the Yoruba-Lucumi tradition, according to Cespedes; a pithy axiom about communication, not to mention one of the greatest pleasures of human connection ("when these lips meet those lips").