Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: FANBOYS" is a mnemonic device you can use to help remember the coordinating conjunctions of English. Team Grammar made this video, figuring that we couldn't very well cover conjunctions without writing a song, now could we? If you're moved to make your own version, send it our way at remix@khanacademy.org; we're excited to hear what you do!