The brāhmaṇas recited auspicious Vedic hymns, which purified the environment by their vibration. The experts in reciting old histories like the Purāṇas, the experts in reciting the histories of royal families, and general reciters all chanted, while singers sang and many kinds of musical instruments, like bherīs and dundubhis, played in accompaniment.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
सौमङ्गल्यगिरो विप्राः सूतमागधवन्दिनः । गायकाश्च जगुर्नेदुर्भेर्यो दुन्दुभयो मुहुः
saumaṅgalyagiro viprāḥ sūtamāgadhavandinaḥ | gāyakāśca jagurnedurbheryo dundubhayo muhuḥ
SB 10.5.5