This is what he looks like.
This birthday Baritone is a fanmade birthday sing a ma jigs but definitely not the last one. He is orange with the same ears, feet, and hands as all birthday sing a ma jigs, has eyes the same as the tenor, has a blue nose and a green mouth. His voice is the same as the orange sing a ma jig, also sings "Happy birthday!" has a white shirt with green polkadots and blue lettering saying "Happy birthday!" He signs in, enters song mode and signs off the same way as the tenor. He Sings "Happy Birthday to You" just like all birthday Sing-a-ma-jigs.