Side one opens with "Flute Piece" -- a softly jarring mix of double bass harmonics with flute until the drums enter and explode the piece into a lush rampage of jungle-birds twirling out around you and flickering off again into a hazy Castalugueengan sunset. "Deep" by Frank Tusa ends side one cool as a cucumber shufflin' down Main Street. "Questions" by Dave Liebman open side two and we're off again into an explosively dynamic mesh of contrapuntal harmonics. The drum solo seems almost like the intense fast-paced scurrying flight of birds across the drums, making me wonder if Moses' statement ("Saxophones are the birds...") wasn't a nit exclusive. Drums can be birds too, in Moses' hands. "Arb om souple" a transcription of a Castaluqueengan folk-song is as other-worldly as Castaluqueenga must be. It'll make you cock your ear a bit sideways and probably agree that it's the most interesting piece on the album. "Devotion" by Bob Moses ends side two in a deep, slowly evolving cycle of soul, dedicated to John Coltrane. It's soft and sad and intensely moving. "Music is an Open Sky" (Sonny Rollins) plus Open Sky is surely music -- in the highest degree. If you're interested in hearing some real music, some non-commericial music, get this album.

Liebman and his trio have a free-floewing feel much like... well, an open sky. And Liebman constantly steps out of the blue to play intoxicating flute, soprano, and tenor sax.
Eugene Chadbourne, The Calgary Herald