In the song "Let the Good Times Roll", Louis Jarvis sings "Hey y'all/ Tell everybody/ Mr Jordan's in town" and points to himself. He should sing "Mr Jarvis is in town", as that is his character's name.
When in the broadcast studio, an announcer steps up to a microphone next to the piano to read an intro for each song. Then, he points off screen to cue Louis the band. However, the microphone is the same one Louis is standing at in each subsequent wide shot, and the announcer is nowhere to be seen.
During the song, "Wham, Sam! (Dig Them Gams)", a girl can be seen sitting on some steps in the background. At the end of the song, Sam Adams has suddenly appears next to her, in a position where he would have been visible during the song.
During the song, "Reet Petite and Gone", the position and placement of the four girls varies between shots. In earlier shots they are split 3 and 1, with Louis Jarvis in between, and then they are split 2 and 2. The girls are also closer to Louis in the close shots than they are in the longer shots.