Same Language Subtitling (SLS) is the simple idea of subtitling the lyrics of musical videos in the 'same' language that they are sung in. Call it 'Broadway Karaoke', or 'MTV Karaoke', or in India: Bollywood for mass reading! A deceptively simple innovation, SLS is already delivering regular and inescapable reading practice to 150 million progressing readers in India and around the world.