I did the Peter Cetera thing back in the day when I first took up bass about 1989. My first bass was an early G&L L2000 my Dad bought from a coworker. It had an old set of flats on it (one busted) and the guy who helped me start playing gave me a new pack of strings and loaned me a tuner. I took them off before even plucking a note and did what he said, tuning it EADG. Of course I ended up tuning it up an octave and must have had it tuned that way for a few days before seeing him again. He picked it up and plucked a note and had that strange look on his face. He immediately knew what had happened and started to laugh. We got it properly tuned and he was amazed/impressed that the old G&L neck stayed true. It was a learning experience for sure.