The Tulsi plant is connected to the U1 and he is playing a digital piano.
A U1 device allows plants to produce sounds and to make music. It does so by measuring the electrical resistance of vegetable tissues and transducing it into a MIDI signal (Musical Instruments Digital Interface). The MIDI signal then controls a synthesizer that produces the actual sound.
Researchers in Damanhur (the developers of the U1 device) have found out in their forty years research that the music produced by the plant is not an automatic outcome of this electrical connection, rather a sort of “awareness” of the plant is also involved.
They say that after some time of being exposed to their own sounds, plants seem to become aware that the sound is coming from them and they start modulating it intentionally.