The Tree in My Tuba, the second book in the Hare and Bear series, tackles the importance and beauty of nature in an urban environment. Simon LeHare is at home in his gray urban environment but is wanting to try something new. He decides to learn how to play the tuba. To his delight, this simple act produces a most surprising result. With each note a leaf appears until at last there is an entire tree! With the help of Tim and his other friends, they use music to create something more beautiful than they could have imagined! As the pages turn, little bits of green begin to appear as Simon and his friends play instruments and sing, until the pages start to blossom with vivid, lush greens teeming with life. But when Important Edward sees what the friends have done, he vows to remove it immediately. Can Simon and Tim stop this opinionated elephant from cutting down their green oasis? Can they show him that even a small action can have a major impact on the world around you?