This short video titled "Five Notes Pentatonic Riff! #shorts" showcases a brief demonstration of a pentatonic riff. The video showcases a musician playing a simple and catchy melody using only five notes within a pentatonic scale. The purpose of the video is to provide a quick and entertaining example of how the pentatonic scale can be used to create a compelling musical riff. The video is part of the #shorts series, which presents bite-sized and easily consumable content.