Matsya Purana — Purūravas Witnesses the Sports of Apsarases and Gandharvas; Attains the Grace...
आपानगोष्ठीषु तथा तासां स नरपुंगवः शुश्राव विविधं गीतं तन्त्रीस्वरविमिश्रितम् //
āpānagoṣṭhīṣu tathā tāsāṃ sa narapuṃgavaḥ śuśrāva vividhaṃ gītaṃ tantrīsvaravimiśritam //
And in those drinking-assemblies, that bull among men listened to their many kinds of songs, blended with the tones of stringed instruments.
This verse does not address pralaya or cosmology; it depicts a worldly, courtly scene focused on music and social gatherings.
It portrays the king (narapuṅgava) engaging with refined arts in an assembly; in Purāṇic ethics, such enjoyment is acceptable when governed by restraint and does not obstruct dharma and governance.
No Vāstu or ritual procedure is stated directly; the only cultural detail is performance practice—singing accompanied by string-instrument tones (tantrī-svara).