Let's Duet! Saw an interesting video or someone you like? Wanna join the fun? Well now's the time to challenge them to a Duet! Update to the latest Android version and let your imagination go wild. Available on iOS soon! How? PS: 1) Select your desired video, tap Duet, and let the fun begin! 2) Don't forget to pick an eye-catching cover when you upload your Duet video!