of the above three are included in the daily seva (devotional service) which all followers of Pushtimarg offer to their Thakurji (personal Krishna deity), and all of them have been traditionally prescribed by Goswami Shri Vitthalnathji almost five hundred years ago. Shri Vitthalnathji is also called Gusainji (Vallabhacharya's second son). The raag, bhog, and vastra and shringar offerings vary daily according to the season, the date, and time of day, and this is the main reason why this path is so colourful and alive. Seva is the most important way to attain Pushti in Pushtimarg and has been prescribed by Vallabhacharya as the fundamental tenet. All principles and tenets of Shuddhadvaita Vaishnavism stem out from here. Pilgrimage Baithak or Bethak, literally "seat", is the site considered sacred by the followers of the Pushtimarg for performing devotional rituals. These sites are spread across India and are chiefly concentrated in Braj region in Uttar Pradesh and in western state of Gujarat. Total 142 Baithaks are considered sacred; 84 of Vallabhacharya, 28 of his son Viththalanath Gusainji and 30 of his seven grandsons. They mark public events in their lives. Some of them are restricted or foreboding. Festivals Pushti Marg followers celebrate several festivals. Icons are dressed and bejeweled to suit the season and the mood of the festival. All festivals are accompanied by a vegetarian feast which is offered to the deity and later distributed to the laity. Most festivals mark the important events in the life of Krishna, the birth of one of Vishnu's major avatars (Ram Navami, Nrushi Jayanti, Janmashtami (Krishna), Vaman Dwadashi), the festivals marking the change of seasons, the day of installation of an icon at the temple and the birthdays of sect's leaders and their descendants. Music Haveli Sangeet or Kirtans are devotional hymns written by the asht sakhas for and about Shrinathji. The instruments played during Kirtan include zanz, manjira, dholak, pakhavaj/mrudang, daff, tampura, veena, harmonium, tabla, etc. Doctrine The works of Vallabhacharya are central to Pushtimarg. He wrote commentaries on Sanskrit scriptures, the Brahma-Sutras (Anubhasya), and Shreemad Bhagwatam (Shree Subodhini ji, Tattvarth Dip Nibandh). Shodash Granthas Also, in order to help devotees on this path of devotion, he wrote 16 pieces in verse which we know as the Shodasha Granthas. These came about as answers to devotees. The verses define the practical theology of Pushtimarga. The Shodash Granthas(doctrines) serve as a lighthouse for devotees. They