The bright yellow sing a ma jig is a fan made sing a ma jig made by Punchcar63 with the voice wiggle effect. She has black circular eyes, purple hair, a light blue nose and a pink mouth. She has the same ear shape as the little one from the orange sing a ma jig duet, the same hand pose as the light blue one and the same feet as the pink one but different style. This bright yellow singamajig has the same voice as the pink sing a ma jig, wears an orange shirt with blue triangles and she sings "Do You Know the Muffin Man?". She signs on by saying "Hello", enters song mode by saying "Let's sing together" and signs off by saying "Bye bye."
Bright yellow sing a ma jig

This is what she looks like.