Please advise me whether anyone has encountered sounds appearing to come from the radio speakers just after you started the car (2003 330xi) but before you turned on the radio - almost as if there were some residual notes from a CD in the CD player when the car was last turned off. About 2-3 seconds after I started the car, I distinctly heard three similar musical sounds in a row (like brass instruments playing together). I immediately checked the radio. It was off. How could this happen? What does it mean? I have never encountered this in any car, any time. Thanks.