Sofia the First: Five's a Crowd
This takes place right after the episode "The Flying Crown". There's going to be a county fair coming to Royal Prep, and Amber, Hildegard, and Clio are really excited. Since Sofia and Hugo are going to participate in the county fair's flying derby race, the trio invites them to join the fun. However, Sofia and Hugo have to save their energy for the race, so Hugo decides to teach Sofia how to play guitar. Amber, Hildegard, and Clio become jealous of Sofia and fear that Hugo likes her more.