Originally Posted by KzSgDrummer
Yes, the 8th note hihat part is part of the original drum track, while the 16ths are an overdub. There's an old article from Modern Drummer where he talks about the Silk Degrees sessions and how he had fun improvising with himself for that overdub.
actually Porcaro DIDN'T like the idea of a double tracked hi-hat on that tune at first. but apparently he got over it quickly for sure!!
my 2nd favorite drummer after Buddy.