Song of the Day: The Beach Boys - Keep An Eye On Summer. This is a real pretty song and all, but there’s a few twists that keeps it from being simple. There are a huge amount of Beach Boy tunes that use Doo-Wop chord progressions and this is one of them. This song goes from G, down to Em7 up to Am and down to D9. This would work fine and be a good song but Brian Wilson constantly adds strange discorded twists to his songs. There’s always a dark cloud blocking the sunlight, and this comes in at the end of each chorus. It goes up into a minor and ends on an unsettling F9. Just a little bit of Brian Wilson’s genius, and that concludes your lesson for today.