Some apps provide feedback based on "hearing" your playing, while others work better with a MIDI connection. Plus, I took stock of the general look and feel of the app/gameplay/video lessons.

Modern technology makes studying to play a new instrument easier than ever. And the best part? Most of these tools are free or affordable.

Nearpod, the video lesson app, also expects to maintain traction in schools, said Pep Carrera, the start-up’s chief executive.