This goal has the following fine print specified by d20diceman:
The musical MetaBee.
This combines my Piano, Synthesia, Drums, VR-Drums and Music Theory and goals into one.
The total target is 160mins of music practice each week. Time spent on any of these goals contributes. Targets on the individual goals are 15mins each per week, so I'll need to do substantially more than that minimum to satisfy the hunger of the Dexterity Bee.