soulo, released in late 2011, is an ios app for karaoke designed to be played on the apple iphone, ipad, ipod touch. the songs that can be downloaded directly to the app include a dynamic interactive display of the lyrics. these songs are all cover versions of original songs. soulo also enables the user to sing along with existing songs in the itunes library. the original vocals from these songs are suppressed via vocal remover technologies. additional voice enhancements such as pitch correction are also included in the game play. these technologies were supplied by the audio technology company izotope. the app is designed to work with a line of microphones and other peripherals made by seven45 studios' sister company, first act.