I'll forgive the reviewer below who didn't like this album. As with many such bands of the early 1970s, CBB was in transition from a blues format to a more pop-rock style, and he obviously didn't care for that format. He's welcome to his opinion.
As for the rest of us, the CBB touchstone is their #1 U.S. hit "Couldn't Get it Right," which came out a year or two after this collection was released. If you're familiar with that and like that tune and/or if the samples you can listen to on this page, then I promise you'll enjoy this set as well as the later "Flying the Flag."
At the time of the release of the "Stamp Album" in 1975, they had enough of a fan base in the States to lift this LP to #69 on the bestseller chart, which is pretty good for a band that hadn't had a hit single at the time. Most of the radio people were caught up with the disco craze at the time, and CBB's tasty pop-rock style, with its excellent bass end and tasty guitar, work didn't fit with what they were shoving down the throats of the mass audience of that day. Their style during this part of their career still carried some of the blues feel of their earlier work, but they had subjugated the overt trappings of that form and tightened up their sound to commercialize it. The result was a very pleasant style that often brought out some excellent tunes, but more often was just, well, pleasant.
The appropriately soaring "Sky High" and optimistic "I Am Constant" are perhaps the best known tunes in this set, and they have the most substance of the tracks here. The rest, other than the throwaway instrumental "Cobra," are pleasant, alternately bouncy and slithery, all enjoyable but not terribly memorable. Still, if this style of music is something you enjoy, you will not at all be disappointed with this set.