How Did You Know? [Day 4]

David K. Israel

If you're just joining us, every day this week, I'm presenting a specific challenge. Your job: come up with the answers and hold onto them! Why? Because on Friday, you'll need them to solve a short puzzle. The first person to email in the correct answers and successfully show how you arrived at them (thus the title: How Did You Know?) wins a choice of any t-shirt or book from our store.

As with our previous challenges, I definitely encourage you to work in teams. Email your friends, send around each daily challenge, conspire, work together, whatever it takes to make sure you're armed with the right answers going into Friday's puzzle.

In case you missed Day 1 of this feature, check out Monday's challenge here. Day 2 is right over here. And here's Day 3.

Today we're getting back to the aperture-style challenges that I mentioned on Day 1. On each page you'll find an image that was extracted from an album cover. Name each album and the artist/band that recorded it.