Bach is Heart Sutra innovated classics with theatre technology, creating a mesmerising space with gigantic glassless mirrors where audiences enter for an immersive experience of the hymn of The Heart Sutra and the music of Bach's Six Suites for Unaccompanied Cello. A unique spatial dimension was constructed in Bach is Heart Sutra with music, projection, and space, creating a gentle sensory fiesta, and giving rise to a spiritual universe where the healing power of the theatre was transmitted. The Buddhist sutra (scripture) The Prajna-paramita Heart Sutra and J. Bach’s Six Suites for Unaccompanied Cello are both milestone classics in human history. The Prajna-paramita Heart Sutra, abbreviated as The Heart Sutra, contains only 260 words which encapsulate the most profound Buddhist teaching of the perfection of wisdom (sanskrit: prajñā) in a deep realization of the multifold phenomena of life and universe as “emptiness”. The Six Suites for Unaccompanied Cello uses the sounds of a cello to construct a spiritual universe with time, space and colours. The immersive experience was divided into two parts. First, audiences engaged in copying out a sutra for stilling the mind and body and bringing them to a restful state. Beyond just training one's ability to concentrate, the handwriting activity produces the same effect as a Buddhist sitting meditation. By copying out the sutra, audiences could experience the peace of mindfulness through the wisdom from The Heart Sutra while immersing deeply in the audio-visual design of Bach is Heart Sutra. After copying out the sutra, audiences walked into the installation set for the second part of Bach is Heart Sutra. This 16-minute theatre-tech-journey was limited to four audiences per session when they immerse in an "emptied" mirrored phantom created by gigantic glassless mirrors. The countless mirror reflections of multifold happenings in the installation set: the projection, the movement of audiences, opened up gateways for audiences' inner reflection. The metaphor of a mirror is frequently used in Buddhism to describe practice, wisdom and enlightenment. Each audience was given a tracker so that the music, lighting and projection will follow the audiences moving around freely at their own pace, constructing a unique experience for each of them as they hear and see in the impermanence of sound, light and projection. With Bach's Six Suites for Unaccompanied Cello merging with the technology of Soundscape and The Heart Sutra - the profound Prajna-Paramita wisdom and Bach's pure music - there is a glimpse of the wisdom illuminating to the emptiness in all matters. Art and religion used to be inseparable from each other for art elevates spiritual experience; and spirituality motivates artistic creation. Chow Fan-fu, an Arts Critics said, " Bach is Heart Sutra is an experience of merging the Buddhist philosophy with Christian music. It's a journey traversing through and integrating the religions of the East and the West." Integrating the Buddhist doctrines with multimedia Art Tech, Bach is Heart Sutra creates an animating arena for experimentation on the interaction between art and religion.