??????In 1975, the Filipino entrepreneur and piano manufacturer Roberto del Rosario also claimed to have invented the first karaoke-type equipment often called the "Sing-Together Process" (SAS). The equipment provided a number of characteristics enclosed in just one portable cabinet casing; which include an amplifier, a speaker, a double or one tap

Songtan Office?Songtan OP - Songtan-dong Office (OP)Songtan Office is a platform that provides information on the best offices in the Gyeonggi-do region. It provides all service information of Songtan OP and is gaining popularity among members due to its high level of reliability and satisfaction. In addition, all managers are in their 20s and prov