284
Śrīmad-Bhāgavatam
[Canto 7, Ch. 15]
TEXT 72
अहं च गायंस्तद्विद्वान् स्त्रीमिः परिवृतो गतः । 
  ज्ञात्वा विश्वसृजस्तन्मे हेलनं शेपुरोजसा । 
  याहि त्वं शूद्रतामाशु नष्टश्रीः कृतहेलनः ॥७२॥
aham ca gāyaṁs tad-vidvān 
  strībhiḥ parivṛto gataḥ 
  jñātvā viśva-sṛjas tan me 
  helanaṁ śepur ojasā 
  yāhi tvaṁ śūdratām āśu 
  naṣṭa-śrīḥ kṛta-helanaḥ
aham—I myself; ca—and; gāyan—singing the glories of other demigods rather than those of the Lord; tat-vidvān—knowing very well the art of singing; strībhiḥ—by women; parivṛtaḥ—being surrounded; gataḥ—went there; jñātvā—knowing well; viśva-sṛjaḥ—the prajāpatis, to whom the management of universal affairs was entrusted; tat—the attitude of my singing; me—my; helanam—negligence; śepuḥ—cursed; ojasā—with great force; yāhi—become; tvam—you; śūdratām—a śūdra; āśu—immediately; naṣṭa—devoid of; śrīḥ—beauty; kṛta-helanaḥ—because of transgressing the etiquette.
TRANSLATION
Nārada Muni continued: Being invited to that festival, I also joined, and, surrounded by women, I began musically singing the glories of the demigods. Because of this, the prajāpatis, the great demigods in charge of the affairs of the universe, forcefully cursed me with these words: “Because you have committed an offense, may you immediately become a śūdra, devoid of beauty.”
PURPORT
As far as  kīrtana  is concerned, the  śāstras  say,  śravaṇaṁ kīrtanaṁ viṣṇoḥ : one should chant the glories of the Supreme Lord and the holy name of the Supreme Lord. This is clearly stated.  Śravaṇaṁ kīrtanaṁ