O'Neal's Whirling Mantis is named for a defensive move in karate. The martial-arts reference suggests one way to look at how O'Neal's music operates: The players react to each other's moves, deflecting one another in stylized interaction.
Colley's not from Kansas, but his music fits the wide-open flatlands, where you can see the weather coming on. Bill Frisell, Brian Blade and Ralph Alessi breathe life into the frameworks the bassist builds on Empire.