Peter Cetera (the singer for Chicago) is actually wearing (in the video for "You're the Inspiration") a t-shirt for the goth rock pioneers the Bauhaus. The band's name is hidden by his jacket (so that the most letters you see is "uha"), but the logo is unmistakable.
The music video for this song was a simple blend of performance miming and scenario playing interspersed throughout. Various couplings are shown showing affection for one another. Cetera is shown strumming his bass (which is flipped upside down, perhaps to better fit the shot or possibly done by Cetera as a bit of a joke) while seated informally on a plush chair for most of the video's duration. The keen-eyed observer can note something of interest: Cetera is shown throughout the video wearing a t-shirt for the goth rock pioneers Bauhaus. The band's name is hidden but the logo is unmistakable. This is noteworthy because Bauhaus and Peter Cetera are so incongruous in the public's perception of the two.