If the US saxophonist Chris Potter should seem too deeply jazz-rooted an artist to fit such a genre-loosening catalogue as ECM's (though he's recorded for it as a sideman in Dave Holland's groups), fans might be relieved that his leadership debut for the label keeps those qualities uppermost. There are plenty of seductive episodes, from the Charles Lloyd-like opening on melancholy tenor-sax exhortations of Wine Dark Sea, to the stealthy, smoky Wayfinder. Potter's rugged tenderness as a ballad player fuels the delicious bass clarinet reverie over Grenadier's solemn bowing on the title track, and Kalypso inventively mingles a dance vibe within a free-jazz rhythmic feel. Only the faintly niggling sensation of this being a classically authoritative Potter jazz set with some suitable concept-exotica embroidery blunts The Sirens' impact.