- ^ https://time.com/4662282/babies-laugh-music-kids-science-happy-song/ https://theconversation.com/we-created-a-song-that-makes-babies-happy-72309 https://adage.com/creativity/work/sound-happy/49556 https://www.fastcompany.com/3064691/the-happy-song-babies-and-imogen-heap-co-wrote-a-baby-food-brand-jingle https://www.inverse.com/article/22304-imogen-heap-the-happy-song https://www.nytimes.com/2020/01/14/magazine/the-happy-song-imogen-heap.html