Heartstring is a simple soundtrack-adding and music discovery app. With the swipe of a finger, you can add 15-second cinematic soundtracks—created by composers around the world—to your videos, slideshows and pictures, then share your creations with the Heartstring community and to any other social platform you’d like. It's like adding a filter, but for your ears.

We're in beta right now. If you'd like an invite to test Heartstring, sign up here.