 He demonstrates extraordinary powers of telepathy and matter transmutation, though the crew initially fail to recognize the cause.Charlie meets Rand in the recreation room, where Mr. Spock plays a Vulcan lyrette and Lt. Uhura suddenly starts singing.Charlie is annoyed with being a subject in Uhura's performance, as well as with Rand paying more attention to the song than to him, so he causes Uhura to temporarily lose her voice.