Chicago's first albums are the best, especially Chicago II which is a masterpiece, I may say... But Hearing Chicago through the decades you see how much they change and grow, evolve actually... And that's normal because music changes through the years, and Chicago went along with these changes... YOu know, there are some great ballads from the 80's by Chicago... It doesn't matter what you play, if the band is great, the product will sound great...