Sukta 21
छन्दांसि। गायत्र्यु१ष्णिगनुष्टुब् बृहती पङ्क्तिस्त्रिष्टुब् जगत्यै
chándāṃsi | gāyatrī́ uṣṇík anuṣṭúb bṛhatī́ paṅktís triṣṭúb jágatī́ íti
The metres: Gāyatrī, Uṣṇih, Anuṣṭubh, Bṛhatī, Paṅkti, Triṣṭubh, Jagatī—thus.
Rishi: Notionally Atharvanic/technical (often unattributed in a personal r̥ṣi sense)
Devata: Chandas (the meters personified/collectivized)
Chandas: List-form (not a single meter; meta-liturgical)
{"primary_rasa":"shanta","secondary_rasa":"adbhuta","emotional_arc":"Quiet ordering → subtle awe at the hidden power of form.","listener_experience":"Settling, organizing, ‘checking the toolkit’ before a rite.","intensity":3}