Animals

The video likely worked by combining a popular song with a useful tool for musicians. The visual of guitar playing combined with the app's instructional overlay provides value to viewers interested in learning guitar.

The video shows a person playing an electric guitar with a red filter. An overlay displays the "Strum" app, showing guitar chords and a prompt to use the app for full chords, indicating it's a tutorial or demonstration of the app's functionality.

Strum: an app that helps users learn and play guitar chords. It ACTS as a reference tool for guitar chords and strumming patterns. Removing it would change the instructional aspect of the video.