As an 8 year old, Shawn Colvin taught herself to play songs on the piano from a book called “Lullabies and Night Songs,” with songs Alec Wilder and illustrations by Maurice Sendak. Later, as an adult about to give birth to her daughter, she used some of the songs from that book to record her first kids’ album, “Holiday Songs and Lullabies.” Now, almost 20 years later, she’s released “The Starlighter,” another album of children’s music that draws its source material from “Lull