The Taittiriya-Upanisad is so called because of the recension (sakha) of the Krishna Yajurveda to which it is appended. It is the most popular and the best-known of all the Upanisads in this part of the country, where the majority of the Brahmins study the Taittiriya recension of the Yajurveda, and it is also one of the very few Upanisads which are still recited with the regulated accent and intonation which the solemnity of the subject therein treated...