We must know the present need of human society. And what is that need? Human society is no longer bounded by geographical limits to particular countries or communities. Human society is broader than in the Middle Ages, and the world tendency is toward one state or one human society. The ideals of spiritual communism, according to Śrīmad-Bhāgavatam, are based more or less on the oneness of the entire human society, nay, of the entire energy of living beings. The need is felt by great thinkers to make this a successful ideology. Śrīmad-Bhāgavatam will fill this need in human society. It begins, therefore, with the aphorism of Vedānta philosophy janmādy asya yataḥ to establish the ideal of a common cause.

Human society, at the present moment, is not in the darkness of oblivion. It has made rapid progress in the field of material comforts, education and economic development throughout the entire world. But there is a pinprick somewhere in the social body at large, and therefore there are large-scale quarrels, even over less important issues. There is need of a clue as to how humanity can become one in peace, friendship and prosperity with a common cause. Śrīmad-Bhāgavatam will fill this need, for it is a cultural presentation for the re-spiritualization of the entire human society.

—Excerpt from Śrīmad-Bhāgavatam Preface

One has to receive the transcendental sound from the right source, accept it as a reality and prosecute the direction without hesitation. The secret of success is to receive the sound from the right source of a bona fide spiritual master. Mundane manufactured sound has no potency, and as such, seemingly transcendental sound received from an unauthorized person also has no potency.
SB 2.9.8 purport