One verse

Srimad Bhagavatam 10.34.23

10.34.23

जगतु: सर्वभूतानां मन:श्रवणमङ्गलम् । तौ कल्पयन्तौ युगत्स्वरमण्डलमूर्च्छितम् ॥ २३ ॥

jagatuḥ sarva-bhūtānāṁ manaḥ-śravaṇa-maṅgalam tau kalpayantau yugapat svara-maṇḍala-mūrcchitam

jagatuḥ
They sang
sarva-bhūtānām
of all living beings
manaḥ
for the mind
śravaṇa
and ears
maṅgalam
happiness
tau
the two of Them
kalpayantau
producing
yugapat
simultaneously
svara
of musical tones
maṇḍala
by the entire scale
mūrcchitam
augmented

Kṛṣṇa and Balarāma sang, producing the entire range of musical sounds simultaneously. Their singing brought happiness to the ears and minds of all living beings.