There might be a fewer bassist jokes in the future if Helsinki-based startup Yousician succeeds in its mission to teach millions of people how to play musical instruments with its app.

Yousician added on Friday bass guitar to its music education platform, on top of recently launched piano and ukulele. The 2010-founded startup says it has helped millions of users play or master its first instrument, the guitar.

The Yousician platform works by listening to users play a real instrument through the microphone of a desktop or handheld device, and uses gamification to deliver real-time feedback on a musician’s accuracy and timing.

“Yousician is working to change the landscape of music education by listening to the needs of users and teachers in our community,” Chris Thür, Yousician’s cofounder and chief executive officer, said in a statement. “By adding these instruments to our platform we are fulfilling the requests of our community, and are three steps closer to realizing our vision of making musicality in the world as common as literacy.”