TURN-ONS AND TURN-OFFS IN CURRENT HOME ENTERTAINMENT RELEASES : ****Excellent ***Good **Fair *Poor : VIDEOCASSETTES

“Piano Legends.� VAI. $39.95. Footage of 23 jazz pianists, all filmed or videotaped during the last 46 years, is well linked by host Chick Corea’s informative narration. Since 13 of the subjects are dead, much of this video will provide glimpses of artists whom most students have never seen: a splendid clip of Bud Powell in Paris, a sadly brief segment of Art Tatum, boogie-woogie pioneer Meade Lux Lewis playing his “Honky Tonk Train� blues, a late shot of Mary Lou Williams (one of the four clips in color), even Duke Ellington taking the A Train as a waltz. An invaluable hour of vital music. Information: (212) 799-7798. ****