Loading Big Mouth Billy Bass with new songs is a conundrum that has fascinated not only hobbyists, but also lectronic engineers, such as Steve Ravet, and NASA scientists like Marsette Vona, who have dedicated many hours trying to get this '90s novelty to sing more than its standard repertoire of "Take Me to the River" and "Don't Worry, Be Happy."
While you don't need an advanced degree in robotics to make Big Mouth Billy Bass change his tune, you do need to have some knowledge in electronics. You also need to be skillful with a soldering iron.
Online help is available on many electronics forums. Big Mouth Billy Bass has drawn a huge fan crowd in the electronics community.