Ajahn Moneyyo recites the Pārāyana Vagga in the Sutta Nipāta (Verses 1038 ff), one of the oldest parts of the Pali Canon. 16 Brahmin spiritual seekers visit the Buddha and ask him profound questions in verse about bondage and liberation.
The unifying theme is going beyond, or crossing over – Crossing the floods (of sensuality, becoming, views and ignorance), crossing over birth and old age, crossing over attachment to the world – With the purpose to instruct and inspire us to do the same.
The Pārāyana Vagga – “The Chapter on the Way to the Beyond” already existed as collection during the time of the Buddha and was memorized and chanted by monastics and laypeople, for eg. by Nandamātā, the Buddha's foremost female lay disciple in deep meditation.
See for eg. https://www.dhammatalks.org/suttas/AN/AN7_50.html
Sometimes monks would discuss the meaning of the Verses, give different interpretations and then go to ask the Buddha about it:
https://www.dhammatalks.org/suttas/AN/AN6_61.html
Sometimes the Buddha would quote some of the Verses and give a detailed explanation himself:
https://www.dhammatalks.org/suttas/AN/AN3_32.html
https://www.dhammatalks.org/suttas/AN/AN4_41.html
A free translation of the whole Sutta Nipāta is available here:
https://www.dhammatalks.org/ebook_index.html#suttanipata
https://www.youtube.com/channel/UCJINt0JJBfFm_x0FZcU9QJw
https://tinyletter.com/dhammagiri/archive
https://open.spotify.com/show/0SHWfWEGkO8OAtSWNJlqyD
https://podcasts.apple.com/us/podcast/dhammagiri-buddhist-podcasts/id1534539834
.