Anderson .Paak Threatens Crowd with R. Kelly Music Unless They Start Dancing

Anderson .Paak wasn't about to let a whole group of people stand still while he DJ'd some of his best music ... jokingly issuing a threat to play some R. Kelly if they didn't start moving.

AP played a barrage of new wave and funk records during Spotify's Best New Artist party Thursday in L.A. The playlist didn't appear to get the reaction .Paak had hoped for, and he repeatedly instructed the crowd to get their groove on ... even after his trusty trumpet player Maurice "Mobetta" Brown arrived on the scene to spruce things up.

At one point, AP singled out a particular stick in the mud who was killing his vibe on the turntables, but eventually powered through and even rocked out on the drums to close his set.

Finally, he threatens the crowd he'd turn on some R. Kelly if they didn't get their act right.

Of course, R. Kelly's music is a point of controversy over the last few years ... he's got decades of prison time ahead of him after his federal sex crimes case. Apparently, AP knew the right buttons to push to get the people going ... cuz they started dancing!