Let's make this birthday one to remember.

39 years old (Born on July 29, 1985)

Happy Birthday, Lauren Barlow! May your day be filled with rhythm that's less frantic than your epic drum solos—though we're not sure that's possible. You rocked our world and inspired countless air-drummers everywhere with unforgettable songs like "Hope Will Lead Us On." Clearly, hope (and good drumming) has led us all exactly where we needed to be.

From banging the drums so passionately it felt like an earthquake—but in a positive 'spiritual revival' sort of way—to lending vocals that could melt away bad days instantly; you've made every stage brighter just by being you. Keep rocking those beats, Lauren—we're still hoping you'll lead us on for years ahead!