The talented toddler showed off his vocal skills with a spot-on rendition of "Old MacDonald Had a Farm," while rocking a stylish nautical-themed bandana around his neck.
As Stefani sang her hits, Apollo proved that he might also have a future behind a drum set, walking around stage rhythmically banging two drum sticks together while gnawing on a purple pacifier that complemented his midnight blue jumper.
This isn't the first time Stefani's son has stolen the spotlight on Snapchat. Apollo and his older brothers -- 9-year-old Kingston and 7-year-old Zuma -- were ridiculously adorable at the wedding of one of Stefani's best friends back in March. Check out the video below to see some of her kids' cutest moments.