You may find the songs on Spotify, Apple Music, Youtube Music and other platforms. 
 
Yummy Yummy 唱唱歌 (Digital Booklet Set A) includes 5 songs: 榴連偵探 Durian Detective, 一蚊一個 One Dollar Pineapples, 圓 dum dur 菠蘿包 Pineapple Bun, 蘿蔔糕巡遊 Turnip Cake Parade & Yummy Yummy 食雪糕 Yummy Yummy Ice Cream 
 
A set of lyric sheet with beautuful original illusrtaion created by Janice Lai (with Jyutping) 
Music scores with colouring pages
8 flashcards with Jyutping
 
Please note, this is a digital product, you will recieve a PDF file.