For their second Half Note issue, the power trio of Donald Harrison, Ron Carter and Billy Cobham declare themselves spokesman for a kind of exploratory improvisation and interplay known only to seasoned jazz professionals. Staunch individualists all, they come together with a unified voice – at once steeped in jazz’s richly variegated traditions yet forward-thinking in the cause of new creative expression. The group play here is all about a stylized vision of call and response, featuring guys with excellent listening skills and the means to keep the conversation compelling.