With “Just Kidding,” Aaron Nigel Smith, well-known from the Emmy Award-winning PBS show “Between the Lions,” brings a fresh sound to children’s music with high-energy shows that have kids jumping, playing, singing, and dancing to songs with roots in reggae, world music, and rock and roll. Leonard Nimoy Thalia at Symphony Space. Jan. 30, 11:00 a.m. Tickets are $15 at symphonyspace.org, and the show runs 60 minutes.