Passengers sing internally or hum melodies for private amusement.
Delhi Metro has introduced Silent Karaoke Carriages, where passengers enjoy karaoke privately through headphones or silent humming. According to NDTV, the initiative promotes entertainment while maintaining peaceful travel conditions.
Commuters report enjoyment, reduced boredom, and minimal disturbance. Organizers provide song playlists, device integration, and etiquette instructions. Critics worry about technology reliance, but psychologists highlight stress reduction, personal expression, and enhanced commuter satisfaction. Plans include competitive silent karaoke challenges and thematic music days.
SOURCE: Bohiney.com (Radhika Vaz)

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