Bud, Not Buddy by Christopher Paul Curtis
Bud (like a plant, not short for 'Buddy', as he determinedly tells everyone) is a motherless boy on the run. He's determined to find his father but doesn't really know where to start. The only clue his late mother left him was a bunch of flyers about Herman E Calloway and his famous jazz band, the Dusky Devastators of the Depression! Bud's search for his dad is a tough one but just occasionally he hits a note as high as even the Dusky Devastators can play! A superbly entertaining, prize-winning novel.