Windy is a fully functioning musical instrument for kids and adults alike. Play Happy Birthday and other songs in a fully interactive way on your iPhone and iPad—no musical experience or talent necessary. Here's how it works: Simply hold down the keys on the screen and blow lightly into the microphone at the same time. Then... - Tilt your device to the left to play flat notes... - Tilt your device to the right to play sharp notes... - Tilt your device up and down to play across three successive octaves... Play through the list of guided songs, or play whatever you want. Make sure to unmute your iPhone or iPad, and turn up the volume. Play over your device's speakers, wireless headphones, regular headphones, or REALLY LOUD over wireless Bluetooth-enabled speakers! Download Windy and use it for free with no intrusive ads. Upgrade to Windy Plus to unlock all 3 instruments and 36 songs forever. No subscription. No sign up. No tracking. No Internet. No hassle. Please reach out with questions and feedback by sending a DM on Instagram @windyapp. Enjoy!