I've played along side several drummers recently who all shared 2 HUGE MISCONCEPTIONS regarding this concept:
First: It is solely the bassist's responsibility to lock in with the drummer while the drummer simply plays whatever and however he likes. I even had one drummer ask the sound guy for nothing but rhythm guitar and vocals in his monitor. When I asked him how he was going to hear me he told me that he wouldn't need to as long as I was locking in with his beat. :scowl:
Second: The statement "The bassist should lock in with the drummer" can be restated as "The bassist should only play on the beats where the bass drum is played." While there's nothing explicitly wrong with simply adding pitch to the bass drum, this severely limits the possibilities of the groove. I think drummers also forget that this limits their creative possibilities as well since they are not able to change up their kick pattern at any point during the song unless the bassist also knows that it's coming. Once again... :scowl:
Has anyone else noticed this becoming a trend among drummers?
I'm sorry that this probably does not help to explain what it DOES mean to lock in with the drummer, but maybe it helps clarify some things that it DOES NOT mean.