Polyrhythmic pursuits, metric modulation, off-balance ideals, adrenaline-fueled solo flights and rhythmic crosscurrents are all part of the package. Acuna's haunting wordless vocals add volumes to the music, though they don't appear too often; Perdomo is the go-between, covering whatever is necessary; and McBride, Watts and Cinelu lay the groundwork and stir the pot. Gilmore and Zenón prove to be the stars, as they paint around one another and deliver some knockout solo work.