音軌

音 = 日 + 立 : Mnemonic symbol: a loudspeaker.

音 = 日 + 立 : Maud Younger and the Sun opened a pop-up store in front of the encampment. They sell vases and advertise them using loudspeakers, playing loud music and dancing to it.

轨 = 车 + 九 : Gitta Giraffe (gu) is riding a roller coaster inside of the Eiffel Tower (ei3). The roller coaster has a red cabriolet (车) follow a figure-nine (九) track (轨). Additionally, the red cabriolet does not emit normal smoke but cloud nines (九).