Norman Spinrad 
Songs from the Stars [EPUB ebook] 

He was Clear Blue Lou, perfect master of the Clear Blue Way, at one with the law of muscle, sun, wind and water governing Aquaria. She was Sunshine Sue, always in a hurry in a world that was too slow, Queen of Word of Mouth. Their meeting had been arranged — but by whom? and why? Beyond the beginning of where the world ended, beyond the highest peaks of its primeval majesty, lay a radio active hell and the lairs of the black sorcerers, the Spacers. The black scientists had not forgotten man’s old dream of touching the stars: they wanted the Age of Space reborn. But they needed a little help.