YouTube April 9, 2024 10:45 am YouTube stars Sam and Casey speak and sing about their new book YouTube stars Sam Tsui and Casey Breves have a new book out called ‘Why Do We Sing?’ They share how they came up with the idea and even perform a song from the companion album. US & World Videos 2:22 House passes TICKET Act targeting concert, event hidden fees 4:36 ‘I felt like I was going to die': Mass. school violence victim speaks 1:59 Highly anticipated witness in Karen Read trial to take stand 4:04 Student violence impacts schools across Mass. 0:44 Deaths of 2 swans in apparent shooting under investigation