A recent bout of decluttering unearthed three relics from a shelf I hadn't visited in years. A cassette. A CD. A DVD. None of them are particularly valuable. In fact, finding a device to play them today might be harder than finding the media itself. Yet I couldn't let them go. The first was a cassette of Kya Hai Yeh Jaadu by Vedic Chant. The second, the soundtrack CD of the film Turning 30. The third, a DVD of Bombay Boys. At first glance, they seem unrelated. But then again,