Four years after he debuted, Hasidic Jew and reggae toaster Matisyahu is well past the novelty stage, as the large crowds at his shows attest. He sounds thoroughly like a pro on his third album, which finds him employing island-flavored jams, skittery hip-hop and slick keyboard grooves. On bright pleasures like the New Wave-y "We Will Walk," Light comes close to becoming an attention-holding pop...