"A beautiful account of a young girl's bravery and her important contribution toward gender equality in the creative arts." -- Kirkus Reviews (starred review)

"The heroine's tenacity in the face of naysayers will inspire all dreamers, and the illustrator's smile-inducing cameo on the last page emphasizes the universality of Millo's story...For those looking for more nonfiction titles about female musical powerhouses." -- School Library Journal (starred review)

"A valuable addition to the growing library of stories about strong Latina women." -- Publishers Weekly

"The text and illustrations work together beautifully here, creating a story that will imbue readers with inspiration and a yearning to make music of their own." -- Booklist

"With its emphasis on artistry and visual metaphor, this title bears a strong kinship with Yuyi Morales' Viva Frida, but it also brings an accessibility that young viewers (and teachers) will appreciate." -- Bulletin of the Center for Children's Books

"Engle's poetic narrative combined with Lopez's warmly ethereal folk-art illustrations to evoke a nighttime tropical dreamscape." -- New York Times Book Review

"Engle's poetic text takes its cues from Zaldarriaga's chosen instrument, its rhythm at times steadily assured and at others loose and improvisational...[E]very spread is full of motion, with some of the illustrations requiring a ninety-degree turn, as if the book itself has got to dance." -- Horn Book Magazine