SMRT is one of Singapore's main public transport operators, running bus services across the island alongside its rail network. The stop bell is part of the everyday interior soundscape of those buses, pressed by passengers throughout each route. Recordings of the chime have circulated among transport enthusiasts and on soundboards, where short transit sounds are collected for editing and nostalgia. Its appeal lies in how specific it is: a second or two is enough for listeners who know Singapore buses to recognise the vehicle, the moment, and the journey.