If you previously bought a copy years ago but lost the digital code, do not buy a new one. You can use the official Synthesia Key Retrieval Tool to enter your original email address and have your legitimate unlock code resent automatically. 3. Educational Group Licensing
If the cost of a Synthesia license is outside your budget, several free or open-source alternatives offer similar visual piano learning tools. 1. Piano From Above synthesia unlock key list
In one community post, a user even shared a supposed "clave de desbloqueo" (unlock key) as "playpiano". It's safe to assume a simple, generic code like this will not work for a modern version of the software. If you previously bought a copy years ago