Blue Shade Witness were a Chicago band, active in the early 2000s. They play very polished emo pop, though probably not the kind you're thinking of when I wrote 'early 2000s.' Blue Shade Witness are more indie rock than pop punk, and I have the feeling that if they stayed together long enough for more than a single release, anything else they put out wouldn't have fit within the parameters of this blog. I think these guys had Coldplay-type aspirations, and a full length probably would have shed the emo pop entirely.
Their only release is a self-titled EP, put out in 2003. They also contributed a track to a Smoking Popes cover compilation in the same year.
