This album has been discussed here in the past, but I'm curious if anyone knows what's happening with the bass on the tune Playa Playa. I've read that Pino Palladino used a P-Bass strung with flats and tuned down a whole step. But there are times when the bass sounds doubled up an octave. It's subtle and intermittent. Upper register fills and double stops aren't doubled, but the main groove is for the most part. Does anyone hear what I'm talking about? Is this D'Angelo's production work?