I Got Two Dogs by John Lithgow (2008)  (comes with a CD of him singing the song)

It is super charming. I played the CD and turned the pages for the first few groups I read it to. It's a great book with a message about music being great for phonological awareness. Every time a word ends with /oo/, the sound is dragged out into a howl. Very fun. Also a great social message about how you don't have to be a prize winner to be loved.  

Jane Corry