September 26, 2020 06:21 pm | Updated 10:50 pm IST Roja 's music sprang many a surprise. Minmini, Unni and Sujatha had all been around for years, but their presence in the stunning album for Mani Ratnam's 1992 film made many wonder where they had actually been all this while. The pangs of separation, portrayed with conviction on screen by …