What is the central idea of along with inventing, kelvin doe likes to listen to the latest music. his village, though, did not get dependable radio transmission. so, kelvin melded his love of music and his interest in engineering. he built his own radio station. his teen friends work as reporters and station managers. he now goes by the moniker “dj focus.” “i picked this name because if you focus, you can invent anything,” explains kelvin.