To listen to this trio reveals what a great influence this group has been on so many artists, in terms of choice of material and style. The most sophisticated and hip vocal treatments - Hendricks was a foremost developer of the vocalese technique - they change moods on a dime and are impossible to predict. Ross takes the lead on "Midnight Indigo," a sultry trickle of sweat on the back of the neck. "Moanin'" mixes up roadhouse blues with the sweetest of refrains. "Summertime" is just on the inside of a discordant wail, an eerie lament. Also included: "Cloudburst" and "Centerpiece."