First up: "The Axe," something that Rigopulos describes as "a joystick music improvisation system." In so many words, you moved the joystick around and various sounds were produced. Unsurprisingly, only 300 were sold -- "a horrendous failure that led to a painful lesson," Rigopulos says. "You can't really build a business on an entertainment experience that only keeps people entertained for 15 minutes." Second, the two tried breaking into the (at the time) $10 billion Japanese karaoke market ... and met with resounding failure once again.
Luckily for us, lessons learned overseas came back with the duo and Harmonix became a game company. Rigopulos and Egozy quickly changed their company's focus from "music tech" to "gaming," creating Frequency and Amplitude soon after. Though the games didn't directly lead to the financial success achieved later with Guitar Hero and Rock Band (GH didn't get off the ground until RedOctane approached Harmonix in the early oughts), both helped the now major developer to get a foot in the door.