Each title in the Sing Along With Me series has five slider mechanisms and a QR code inside that links to both an instrumental and vocal version of the nursery rhyme. Simply scan the code for little ones to listen and sing along About the Author Yu-hsuan Huang , also known as Smallx2, started her career as an illustrator, working on editorials, picture books, and commercial projects. She also has her own illustration brand called Smohouse. She lives with her family and two lovely cats in Taiwan.