I don't know if anyone was yearning for a meeting of Jewish and Native American music, but R. Carlos Nakai has planted his foot at its nexus. Here, he teams up with a longtime member of the Philadelphia Orchestra, Israeli-born cellist Udi Bar-David. Both musicians have worked at the multi-culti intersection: Nakai has recorded with musicians from Japan, Germany, and Tibet, while Bar-David has an organization called Intercultural Journeys that facilitates similar collaborations.  With only a few exceptions, the tone ofVoyagersis muted and solemn. Melding Native American, Middle Eastern, and Jewish themes in oceanic currents,Voyagersmoves through slo-mo largos like an oceanic cruiser plowing through a high-viscosity sea.  Along with percussionist Will Clipman, they play in solo, duo, trio, and faux quartet settings, the latter with Bar-David multitracking cellos in interweaving lines and counterpoints.  Ernest Bloch's "Prayer from a Jewish Life" is especially provocative, as Bar-David's double cello lines perform undulating wave actions while Nakai's flute sounds like a bird struggling to attain the heavens. "Whirlwinds Dancing" is a theme by Nakai, but Bar-David gets into some ear-bending tonalities on the track that contrast with Nakai's soulful melody.Voyagersonly turns upbeat on the klezmeresque "Lech Lamidbar--Go to the Desert," with Clipman nailing out the dancing groove on dumbek.  While it's not as immediately inviting as many of R. Carlos Nakai's albums,Voyagersdoes reward you if you book passage.--John Diliberto