Be it a group or a solo performance, watching people dance to the beat of a catchy tune is a surefire way to brighten up your day. Just like this clip that features a trio dancing to the viral Tamil song Tum Tum. Actors Megha Chakraborty, Hetal Yadav and Saumya Saraswat showing their killer dance moves to Tum Tum. “Groove …