Sour Kangaroo Sour Kangaroo isn't really sour at all. She's just got a lot of attitude. She's loud, brassy, and a lot of fun. PAGE NOTES TRACK P24 BAR 1 - P26 BAR 25 Speaking & Singing Track 4 Young Kangaroo Her tiny sidekick. PAGE NOTES TRACK P24 BAR 1 - P26 BAR 25 Just the Young Kanga Lines Track 4