This is a nice description of Lord Kṛṣṇa’s transcendental conchshell, and of how He was recieved by the citizens of Dvārakā. Beautiful!
Sūta Gosvāmī said: Upon reaching the border of His most prosperous metropolis, known as the country of the Ānartas [Dvārakā], the Lord sounded His auspicious conchshell, heralding His arrival and apparently pacifying the dejection of the inhabitants.
The white and fat-boweled conchshell, being gripped by the hand of Lord Kṛṣṇa and sounded by Him, appeared to be reddened by the touch of His transcendental lips. It seemed that a white swan was playing in the stems of red lotus flowers.
The citizens of Dvārakā, having heard that sound which threatens fear personified in the material world, began to run towards Him fast, just to have a long desired audience with the Lord, who is the protector of all devotees.
…The sound heralded by Lord Kṛṣṇa was something like the heralding of the sunrise in the morning. This sound of the Lord is identical with the Lord. We are always fearful due to our ignorance of the next problem. The whole material existence is full of problems, and thus the fear problem is always prominent. This is due to our association with the illusory energy of the Lord, known as māyā or external energy, yet all fear is vanished as soon as there is the sound of the Lord, represented by His holy name, as it was sounded by Lord Śrī Caitanya Mahāprabhu in the following sixteen words:
Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare
Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare
We can take advantage of these sounds and be free from all threatening problems of material existence.
SB 1.11.1-3 Full text and purport More
The Hare Krishna Movement 