Bhagavad Gita
1.13

ततः शङ्खाश्च भेर्यश्च पणवानकगोमुखाः | सहसैवाभ्यहन्यन्त स च शब्दस्तुमुलोऽभवत् ||१३||

tataḥ śhaṅkhāśh cha bheryaśh cha paṇavānaka-gomukhāḥ sahasaivābhyahanyanta sa cha śhabdas tumulo'bhavat

Translation

After that, the conchshells, drums, bugles, trumpets, and horns were all simultaneously sounded, and the combined sound was tumultuous.

Interpretation

The Kaurava war instruments sound — but note they are a cacophony of many types of instruments. The sound is described as 'tumultuous' (tumula). By contrast, the Pandava conchshells, blown by Krishna and Arjuna, will be described with specific names, as if they carry a divine resonance.