ANHAD/ANHAT BANI or SHABD :A sound that is unending and knows no limits. Audible life current originating from the Divine Will, endlessly carrying on the work of creating and sustaining the universe; interchangeably used with Anhat meaning \'Unstruck\', as it it automatic and not instrumental. It also means sound not produced by physical concussion; the mystic melody or music believed to be heard by the Yogis (persons of high spiritual attainment) in a state of ecstasy or super conciousness.
BAVAN AKHARI, a poem constructed upon 52 (bavan) letters (akhar) of the alphabet. In this form of poetry each verse begins serially with a letter of the alphabet. The origin of the genre is traced to ancient Sanskrit literature. Since the Devanagari alphabet, employed in Sanskrit, comprises fifty-two (bavan, in Hindi) letters (33 consonants, 16 vowels and 3 compounds), such compositions came to be called bavan akharior bavan aksari. Notwithstanding this nomenclature, no such composition consists exactly of fifty-two stanzas as few stanzas will open with a vowel, and the compounds are generally left out of this scheme of poetry.
SORATHI KI VAR, or Ragu Sorathi Var Mahale Chauthe KI as is the full title recorded at the head of the text in the Guru Granth Sahib contrasting the short title in the index, is one of the eight vars composed by Guru Ram Das. It comprises twenty-nine pauns, i.e. stanzas of five verses each, interspersed with fifty-eight slokas three of them being by Guru Nanak, one by Guru Angad, forty-seven by Guru Amar Das and seven by Guru Ram Das, the author of the Var. The Var opens with Guru Nanak`s line: "sorathi sada suhavani je sacha mani hoi agreeable always (to sing) is Raga Sorathi provided one`s mind is to truth attuned" (GG, 642).