Is Music Time! Have your little one sing along in these CoComelon boys' 2 piece pajamas. These pajamas are made with soft fabric so your child can play and have a comfy night's sleep. These 2-piece CoComelon Boys' pajamas include a shorts sleeve tee with the lovable CoComelon baby with 'Music Time' and allover pattern Pj pants. Nickelodeon polyester boys sleepwear set size 2T, 3T, 4T.