505

The video combines a visually engaging activity (playing guitar) with a practical tool (a guitar learning app), demonstrating the app's utility in a native, non-intrusive way.

A guitarist plays an electric guitar while using a mobile app called "The Strum App" to display chords and lyrics for the song "505". The app is shown to be helpful in learning the song.

The Strum App (app): Acts - its interface is operated to show guitar chords and song lyrics, providing a visible result (chord diagrams and lyrics) that helps the user learn a song. Removing it would change what happens in the video. Arctic Monkeys (band): Appears - their song "505" is searched for and displayed in the app. Removing it would not change what happens in the video.