CHENNAI: "Oru jeevan thaan, Un paadal thaan, Ooyaamal isaikkindrathu, Iru kannilum un gnyaabagam,’ croons Chithra, eyes closed, lingering on the low notes. Tamil film songs — apart from this stellar hit from Naan Adimai Illai — and the sound of deft chopping, and sizzling fills this serving staff and her colleagues’ six-hour shift daily at the quaint RVIVE Bakery and …