Good tap dancing routine including dancing with a chair.
Full story title reads: "Steppin' Fast!" by Johnny Nit the famous Dancing Star of Blackbirds."
Johnny dances against a curtain backdrop with two musicians in the foreground on small platforms. One plays the drums, the other a saxophone.
Johnny is a black tap dancer or "hoofer"! He is very good and does his routine for the enjoyment of the cinemagoer. Various shots and angles of Johnny as he dances.
Part of Johnny's act is to dance with a chair. First he dances holding the chair, then he lies on the ground with the chair on its side and dances on the chair as he holds it up. Pretty impressive.
The song performed is "Whistle, & Blow Your Blues Away" - a jazz number.
Note: for search purposes I think the show that Johnny was in is actually transcribed