On Show4me you can add both albums and tracks to Playlists. To create a playlist go to the page of the track or the album that you like, or pick one on the Discover section. Click on the three dots symbol and choose "Add to playlist". Choose whether you'd like to create a new playlist or add the track to the existing one.
If you want to create a new one, click on “New Playlist”. In the new window, you can customize your playlist - give it a good name, like “My favorite tracks”, choose a cover image and add some description to it. The name field is a mandatory one while the cover image and description can be skipped. When you’re done, click on the “Create” button.
To find your playlists and listen to them, go to your Library section. Your playlists can be found in the corresponding tab. You can also create new Playlists here and fill them with music you like later.