Geluidseffecten en leaders:

Intro: Happy airlines ym-2413.wav by milton. — https://freesound.org/s/492958/ — License: Creative Commons 0

Ronde-tune: Taratata.wav by milton. — https://freesound.org/s/162453/ — License: Creative Commons 0

Linke-ronde alert: SweetAlertSound1.wav by KIZILSUNGUR — https://freesound.org/s/72125/ — License: Creative Commons 0