India, Sept. 22 -- India's two biggest e-commerce companies, Flipkart and Amazon, are set to kick off their annual mega sales on 23 September. Customers across the country are eagerly waiting to take advantage of the promised discounts, while employees of both firms are working tirelessly to ensure glitch-free operations.

(Also read: Bedding brought to Flipkart office for employees before Big Billion Days sale: 'We do night stays in office')

Amid this high-pressure period, a video gaining traction online has offered a lighter glimpse into the atmosphere inside Flipkart's office. Shared on Instagram by Simrann Bhambani, a marketing executive at the company, the clip shows employees gathered together while one colleague plays the guitar a...