Spotify

Best value for money. Spotify lets me discover new music I love, ALL the time. Whether it's their personalized Discover Weekly playlist, or starting a playlist of my own and adding suggestions, or their smart playlist option that adds songs I may like to my existing playlist... I use music and Spotify to lift my mood up, or help me relax after a hard day, or keep me focused while I code. And the UI is great, clear and simple.