In the mid-1990’s, IVL introduced vocal harmony to the Japanese commercial karaoke market. This innovative feature proved very popular leading to IVL capturing approximately 70% of the market where customers included such firms as Daiichi Kosho, Xing, Taito, and Sega Music Networks.

IVL continues to pursue opportunities for technologies such as On-Key™ pitch correction, harmony, meaningful scoring systems and vocal transformations to be integrated into commercial karaoke systems throughout the world.