With tonestro Premium you have unlimited access to all of the content within the app. This means that every song is unlocked.
You also get full access to all lessons in the learning path. Please note: tonestro Premium does not mean that all lessons are unlocked. You will be able to take certain lessons that non-premium users can not take. To unlock lessons, you must go through the learning path or take an exam.
tonestro Premium is not limited to one instrument. You can choose any instrument and still have all the Premium benefits.
The songs and exercises that are part of the Premium subscription are labeled with a crown-icon.