In honor of their late mother who had a passion for music, the 'Good Morning America' co-anchor joins her brother and sister to discuss their new children’s book, "Lucy Sings on Lucy Street." ––– Subscribe to ABC News on YouTube: https://abcnews.visitlink.me/59aJ1G ABC News is your daily source of breaking national and world news, exclusive interviews and 24/7 live streaming coverage. Download the ABC News app for the latest headlines and alerts: https://abcnews.go.com/devices Watch 24/7