In these days of storing all your music on your computer you have instance access to loads of music, add to that services like Spotify and there is such a huge choice and variety of music at your fingertips. 
Yet there are some days when you just can’t find something to listen to, you can scour all the music you have, and sit endlessly clicking for what seems like days with your playlist on shuffle and not one track seems right, not a single one is the track you want to listen to at the moment.