Music puzzles and trivia.

The Music category runs wide. Tchaikovsky sits a few flips away from Run-DMC, and Louis Armstrong shares a shelf with Earth, Wind & Fire. You flip cards, hold a grid of hidden letters in your head, and spell the theme in as few flips as you can manage.

Some of these you'll know cold: Highway to Hell, or a One Hit Wonders round that has you humming something you forgot you knew. Others send you somewhere quieter, a bebop side street, a Bright Eyes lyric, a name you half remember from a record someone once played.

Every puzzle here was put together by hand. Somebody picked the theme, set the letters, and often left a small fact at the end, the kind of thing you repeat to a friend later without meaning to.

It plays offline, doesn't track you, and asks for nothing after you buy it once. That's $2.99, or free if you don't mind the ads.

So put something on, or don't, and start flipping. The pairs are hiding in plain sight, and the theme comes together one memory at a time.