Duette is a free multimedia app available on the iPhone platform, developed by Lachlan Glen. With Duette, users can record split-screen videos, known as Duettes, along with existing accompaniment videos. The app allows users to record accompaniment videos up to 7 minutes long, which can be discovered and recorded along with by other users.

One of the standout features of Duette is the ability to connect an external microphone to capture professional sound quality. Users can also save notes along with their base track to provide additional information to other users. The app offers a search function to easily find existing base track videos by performer, title, or songwriter/composer.

Duette provides a seamless user experience with easy syncing and volume control adjustments to create the perfect video. Additionally, users don't have to wait for the app to process their videos; they can simply upload them and wait for the notification when the processing is complete.

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