All future updates are included with your one-time purchase at no additional charge. That's enough for one or two of your favorite songs! How long does it last? Buy once, play forever! Purchase an unlock key, learn how to play any songĪll 150 included songs are available immediately and Synthesia can help you practice any MIDI song you can find or create.Īs a bonus when purchasing directly from our website, your unlock key can also be used in the promo code box at the Music Store for a $3 credit.