The solution below is by David Welbourn.
>about. take backpack. x backpack. x toolkit.
>x flute. take flute. play flute.
>x hippo. (the hippo is curious, at first)
>play flute. 2. talk to hippo. 1. talk to hippo. 2. talk to hippo. 3.
>play flute. 4. (the hippo is now angry. Don't continue playing the brash music; if the hippo gets too angry, he'll kill you.)
>talk to hippo. 2. (the hippo tells his story.)
>play flute. 1. (the hippo is now sad.)
>talk to hippo. 3. (the hippo allows you to tell your story and cheers up.)
>play flute. 1. (now the hippo acts crazy.)
>play flute. 2.