We perform kirtana with khol, karatala, this is also krsna-kirtana. And to write books, that is also krsna-kirtana. And to read books, that is also krsna-kirtana. Not that simply this kirtana is kirtana. If you write books about Krsna, if you read books about Krsna, if you talk about Krsna, you think of Krsna, you worship Krsna, you cook for Krsna, you eat for Krsna — so that is krsna-kirtana.
Srila Prabhupada – March 17, 1974, Vrndavana