The Present work “Raga Ratan : Pearls of Celestial Symphony” by Sardar Tej Partap Singh Sandhu and Sardar Anurag Singh is first of its kind in English. A beautiful literature springs from the depth and fullness of intellectual and moral life, and from an energy of thought and feeling. The present work is a labour of love and enduring in quality and contents, and totally justifies the popular adage, “nothing lives in literature, but that which has in it the vitality of creative art”. Instead of Ragmala Paintings the creative genius of ace photographer Sardar Tej Partap Singh Sandhu found inspiration from Sri Harimandar Sahib (Golden Temple) to present the 31 Principal Musical Measures (Ragas) through visuals, captured with tireless exertion and unflagging zeal. Similarly, Sardar Anurag Singh in his Introductory Thesis and Chapters on Sri Guru Granth Sahib and Sri Harimandar Sahib (Golden Temple) highlighted the oecumenical concept of Sikhism. Besides his translation of the Sacred Hymns in sonorous English is a valuable addition in the field of English literature. The light of nature, the light of science and the light of reason are but darkness compared with the Divine Light, Which shines within the soul with purity of thought generated by the Word of God. This is the theme of this book “Raga Ratan : Pearls of Celestial Symphony, which will provide enough food for thought to the receptive souls and it will prove useful to all the readers in this field.