Roberto del Rosario, a Filipino is claiming the right for the invention of the Sing-Along-System (SAS) that eventually led to the development of Karaoke, a Japanese term for "singing without accompaniment". Among del Rosario's other inventions were the Trebel Voice Color Code (VCC), the piano tuner's guide, the piano keyboard stressing device, the voice color tape, and the one-man-band (OMB). The OMB was later developed as the Sing-Along-System (SAS).
