I'd like to show you a quick-n-easy Photoshop tutorial for how to create your own Spotify playlist thumbnails. Unfortunately, the custom thumbnail Spotify feature for the common folk is still in the works, but there's no shame in having a little fun while they work out the kinks.
Collins, a brand consulting agency in New York, created a new brand identity system for Spotify that could be replicated by their multitude of widespread designers. Powerful photography, a simple duotone treatment, unique typography and use of shapes. You can explore the full project here: Spotify Brand Identity.
So let's play with history.
How to Create Your Own Spotify Playlist Custom Thumbnail
Make sure your whites in the black and white are extra white. You can achieve this by boosting the brightness in the Brightness/Contrast settings.
The brightest colors work best for the Multiply Layer. Darker colors and tones tend to disappear.