A prince among Stones - Rupert Loewenstein

In 1968 Mick Jagger couldn't understand why the Rolling Stones had no
money. The man he asked to help was a German prince, a merchant banker.
They forged an unlikely alliance which re-invented the business of
rock'n'roll. As a youthquake shook the Establishment, Prince Rupert
Loewenstein thrived in both worlds, never relinquishing his elegance or
decorum. For nearly forty years Prince Rupert worked with the Stones
as
'a combination of bank manager, psychiatrist and nanny', usually
enthralled but often bemused and exasperated.Coolly impartial, dryly humorous, this is a refreshingly different take on the rock'n'roll world from within its inner sanctum.