Secret Harmonies [Paperback] by Paul J. McAuley

The planet Elysium is paradise. 

Like Earth before the Age of Waste it is both beautiful and bountiful, inhabited by peaceful aboriginals.

Yet all is not well in paradise. At Port of Plenty the first colonist kept the new technology brought by the ships to themselves, governing the settlements with an iron hand. 

Two men, Richard Florey who worked in the city's university, and Miguel Lucas, a settler who has 'gone dingo', find themselves caught up in a revolution. A revolt that would awaken the alien aboriginals and change Elysium forever . . .