Was listening to a year-or-more old podcast called No Guitar is Safe, featuring an hour-plus interview with Charlie Hunter.
If you know him, you respect him. He’s innovated a 7-string guitar/bass hybrid, which he plays fingerstyle to hold down both roles while he plays jazz, funk and blues: Charlie Hunter - No Money No Honey - YouTube
Obviously a smart, technique focused player. During the interview, he shares that he started as a drummer and still tries to drum every day. And that for a recent, rare open gap in his touring/recording schedule, he played every day for a couple of hours. He was mostly “working on the ‘and’ of 4”.
If you read my music posts, I am not technical at all, but I have to say, I got that immediately. You’re coming to the end of a 4 count measure, and maybe there’s a chord transition on the next 1 beat, or the music is going through a big swell-up. 1 and 2 and 3 and4and 1 and… You get mushed together in your playing - You start thinking both about the change AND deciding if you should/ then executing a little “fill bit” - a flourish or accent lead to punctuate and sell the change.
He talked about how we - esp guitarists - rush the ‘and’ of four as “shown” above because our brains get full doing what is mean to be a brain-less channeling of music, so he was working on getting more brain-less in grooving through his 4-counts.
I can’t believe I get all that and dig it. So I thought I’d check in - have you worked on the ‘and’ of 4, or, on reading this OP, have a flicker of recognition as a player?
ETA: sigh. Didn’t realize my autocorrect had double apostrophe’d the Title word "Musician’s’ ".