PopWatch HeadScratcher No. 67
Another PopWatch HeadScratcher to get you through the weekend:
What do these five acts have in common?
Sly and the Family Stone
Your answer should be as specific as possible. Send your best guess to email@example.com. Be sure to write “HeadScratcher” in the subject line and include your first and last names in your e-mail. We’ll post the most interesting responses Monday afternoon.