Punk Farm
By Jarrett J. Krosoczka
Knopf, 40 pp., ages 4-9, $15.95
Brothers in Hope: The Story of the Lost Boys of Sudan
Written by Mary Williams
Illustrated by R. Gregory Christie
Lee & Low, 40 pp., ages 7-12, $17.95
The Secret to Freedom
Written by Marcia Vaughan
Illustrated by Larry Johnson
Lee & Low, 32 pp., ages 7-10, paperback, $7.95
Jose! Born to Dance
Written by Susanna Reich
Illustrated by Raul Colon
Simon & Schuster, 32 pp., ages 6 and up, $16.95
The best picture books are like a dance -- they move, change, surprise, and fluctuate, all within a contained form, as this month's selections prove. ''Punk Farm," by Bostonian Jarrett J. Krosoczka, takes the old song ''Old MacDonald Had a Farm" to new decibels. On the farm, hidden in the barn, is a punk band composed of cow (on drums), goat (bass), pig (guitar), chicken (keyboard), and sheep (vocals). The book is fearless in conception and execution, a jazzy comic bit of thievery and transformation. It does not look or sound or behave like your father's old picture book -- the lyrics slam and slide across each boldly bright page, and the crowd ''goes crazy," dancing to their favorite tune. No wonder at dawn each day, the animals are snoozing in the barn. Fans can even log on to www.punkfarm.com to ''download their barn-burning single."