India is the next big thing on the global rock music map with international bands culling heavily from this country, say Indian and international rock musicians. Many of them are performing at the two-day Fuel-Great Indian Rock festival that began in Mumbai Thursday. The Delhi leg of the festival is to take place Nov 1-2 at the Hamsadhwani open air theatre in Pragati Maidan. The 13-year-old festival, one of the oldest international rock music festivals in the country, will travel to seven