TRUE TO its name, The System employs a no-fail system for cranking out its assembly-line output: Blueprint the beat, set the sequencers and synthesizers to "standard funk riff," dash off some words that rhyme, give it a title and call it a song.

On "Don't Disturb This Groove," the two-man System delivers another anonymous shipment of perfunctory funk.

Keyboard player David Frank has every modern convenience at his disposal, and the result is 10 disposable tracks that sound like a bunch of appliances in concert. The lyrics are less imaginative than the arrangements, and the background singers sound more impassioned and involved than Mic Murphy's dishwater vocals on "Heart Beat of the City" and "Modern Girl." Hang a "Don't Disturb" sign on this sleeping groove.

New York's Cover Girls work up considerably more energy on their 12-inch debut, "Show Me" -- it's a shame their style belongs to someone else. The faceless Cover Girls turn in a performance cloned from early Madonna discs. The vocals are grafted onto a busy hip-hop dance track (7:35 worth) that really comes alive when the Latin Rascals, the producers, begin cutting up and digitally sampling the singing.

Washington's C.J.'s Uptown Crew has a winner with "It's Good to Go Drug Free," a sophisticated suite of pleas and thank-yous for go-going without crack. Over an I-dare-you-to-stand-still rhythm that goes through several appealing changes, C.J. layers a variety of rhymed testimonials from some tough-talk kids, cute five-year-old go-go girls, Dr. Calvin W. Rolark and go-go all-stars like Little Benny, Mr. B-More and Too Fly Ty. -- COVER GIRLS -- "Show Me" (Fever SF 814). Appearing Saturday at Potomac Riverfest, Seventh & Water SW. THE SYSTEM -- "Don't Disturb This Groove" (Atlantic 81691). C.J.'s UPTOWN CREW -- "It's Good to Go Drug-Free" (Gotta Go-Go CS 7118). Both appearing Sunday at Riverfest.