Here's a rule of thumb in the music world: Double LPs usually are never great. Even well-established acts have a hard time pulling off a successful double album. There are exceptions (Stevie Wonder's Songs in the Key of Life), but usually these albums have a few songs that are really good or great and the rest is fluff, filler and padding. Again, established acts have trouble with 2x LPs. Well for Chicago (everybody's favorite Blood, Sweat & Tears knockoff), this was their debut album and it was a double dipper. So, as you may guess, its got a few really good songs, but the group runs out of ideas pretty quick.