acting on behalf of the author and the author's Indian agent, Anuj Bahri of Red Ink Literary Agency. The Oath of the Vayuputras would be released in the United States in summer 2014. The Oath of the Vayuputras was released in six different languages, namely English (South Asia), English (UK), Hindi, Telugu, Gujarati and Marathi. Marketing techniques Since both The Immortals of Meluha and The Secret of the Nagas had innovative marketing techniques, Tripathi spoke about similar innovativeness with the release of The Oath of the Vayuputras. One of the marketing strategies included a music album called Vayuputras, an original soundtrack based on the Shiva Trilogy. The idea for the album came from Sangram Surve, CEO of Tripathi's advertisement agency, Think WhyNot. The album had nine songs dedicated to Lord Shiva with several Bollywood singers lending their voices, and was inspired by the different sections and storyline in the books. Titled "Jo Vayuputra Ho" ("One Who is a Vayuputra"), the lead song was composed by musician Taufiq Qureshi and recorded by singer Sonu Nigam. A music video was also developed by Think WhyNot team, directed by Amit Pandirkar and music by Rajeev Sharma. The video was broadcast in popular television channels and across all social media platforms. The concept of the music video was the journey of the three books of the Shiva Trilogy in its five-minute span. Other marketing strategies included launching interactive apps, merchandise and events that would follow the music and book launch. In an interview with Business Standard, Surve explained: "After tasting the stupendous marketing success of, The Secrets of the Nagas, we are very excited to partner with Amish for the launch of The Oath of the Vayuputras. The 'think big' brief given to us was apt for the launch of the final book ... The challenge was to not just get existing fans of the franchise to buy The Oath of Vayuputras—that would happen anyway—but to expand the reader base. The campaign idea revolved around creating another 'first-of-its-kind' in book marketing, which this time around turned out to be the production of a world-class music video which is poised at reaching out to the masses through television, in a bid to garner greater awareness about the book." Critical response The book received mixed to positive responses from critics. R Krishna from Daily News and Analysis gave a positive review for the book. He observed