The oral tradition of the Vedas (Śrauta) consists of several pathas, "recitations" or ways of chanting the Vedic mantras. Such traditions of Vedic chant are often considered the oldest unbroken oral tradition in existence, the fixation of the Vedic texts (samhitas) as preserved dating to roughly the time of Homer (early Iron Age).
UNESCO proclaimed the tradition of Vedic chant a Masterpiece of the Oral and Intangible Heritage of Humanity on November 7, 2003. Wayne Howard noted in the preface of his book, Veda Recitation in Varanasi, "The four Vedas (Rig, Yajur, Sama and Atharva) are not 'books' in the usual sense, though within the past hundred years each veda has appeared in several printed editions. They are comprised rather of tonally accented verses and hypnotic, abstruse melodies whose proper realizations demand oral instead of visual transmission. They are robbed of their essence when transferred to paper, for without the human element the innumerable nuances and fine intonations – inseparable and necessary components of all four compilations – are lost completely. The ultimate authority in Vedic matters is never the printed page but rather the few members ... who are today keeping the centuries-old traditions alive."
The various pathas or recitation styles are designed to allow the complete and perfect memorization of the text and its pronunciation, including the Vedic pitch accent. Eleven such ways of reciting the Vedas were designed - Samhita, Pada, Krama, Jata, Maalaa, Sikha, Rekha, Dhwaja, Danda, Rathaa, Ghana, of which Ghana is usually considered the most difficult.
The students are first taught to memorize the Vedas using simpler methods like continuous recitation (samhita patha), word by word recitation (pada patha) in which compounds (sandhi) are dissolved and krama patha (words are arranged in the pattern of ab bc cd ...); before teaching them the eight complex recitation styles.
A pathin is a scholar who has mastered the pathas. Thus, a ghanapaathin has learnt the chanting of the scripture up to the advanced stage of ghana. The Ghanapatha or the "Bell" mode of chanting is so called because the words are repeated back and forth in a bell shape. The sonority natural to Vedic chanting is enhanced in Ghana. In Jatapatha, the words are braided together, so to speak, and recited back and forth.