How can he be sure?

David Cassidy has just announced his retirement. During a recent live show he forgot the words to a number of his hit records and at one point tumbled off the stage; he hadn't fallen off the wagon, as some initially thought, but instead has been diagnosed with dementia.
The former pop idol has not had much in the way of luck lately. Rehab clinics, courtrooms and the back of police vehicles have been his backdrop for the last few years; the days when he could sell out venues faster than the Beatles are long gone. Ditto his poster boy image.
For anyone interested in where it all started to go wrong - after a handful of years where it was all going so incredibly right - I seriously recommend his self-penned memoir 'Could it be Forever?'
And if you fancy some tasty reworkings of his old 45s, look no further than his rather excellent 1998 album Old Trick, New Dog.

David Cassidy - How Can I Be Sure?