Their stage presentation looks unplanned and completely natural, as though there were no audience at all and it was just a Saturday jam at a friend’s house. Each of them dance and sway to their own sound. I’d say the stage is on the smaller side for a large event but allows each performer to take up a large amount of space and hence have a better defined and larger presence.
The trio communicate verbally and through subtle hints in their practical performance and facial expressions, which suggests that the three have known each other for a long time and trust each other to carry their own weight during a performance. There’s minimal communication with the audience as their actions are directly in response to their own performance, but I don’t think audience interaction is particularly appropriate during a jazz show. They must have communicated how they’d like the lights to be and what display they would like behind them to the appropriate people and expressed how they want the stage set out as it’s not a traditional set-up. At the end of the piece, the keyboardist thanks the audience and talks casually with them.
Java Jazz Festival had a total audience of 47,000 people across multiple shows, so this particular show likely had up to two or three thousand people. As the name of the festival suggests, they’d attend for primarily jazz performances.
The entire performance sounds improvised and as though they’re following a simple beat and set of chords, as well as a general time to jump in. All three musicians present themselves as highly skilled and keep the audience entertained by jumping up the difficulty of their part or preparing a crescendo as a band.