Yoga guru Baba Ramdev's bhajan singing reality show 'Bhajan Ratna' held its 'Maha Audition' from January 14 to January 17 at Patanjali Yogpeeth in Haridwar. At the auditions, 40 out of 354 candidates were shortlisted. The 40 'ratnas' will also be groomed in yoga and Indian culture and music. The show is expected to air on Aastha channel this summer.