Kylie Minogue in Jakarta

JAKARTA (Reuters) - Kylie Minogue cavorted amid indigo lights as thousands clapped and cheered. An ordinary concert scene -- except that this was Indonesia, the world's most populous Islamic nations, and tickets cost more than an average month's pay for many.

Yet Minogue is far from alone in playing Jakarta, capital of Southeast Asia's top economy. Artists including Justin Bieber, Janet Jackson and Bruno Mars have all held concerts here in recent months, with the Cranberries, Linkin Park, and Lady Gaga set to come.

All are aiming at Indonesia's young population, the world's fourth-largest, with its rapidly-growing middle class that is able and eager to splash out for tickets.

"Indonesia is on the radar of artists in Asia because the market potential is huge and people don't mind spending more on tickets," said Jakarta-based music expert Bens Leo.

Farid Dermawan and 14 friends shelled out 1.5 million rupiah each for their tickets, about 15 percent higher than the capital's monthly minimum wage peg. Tickets ranged from 1 million to 4.5 million rupiah.