I could not get the king to go to the lake, lake would appear on the screen and then disappear. I probably am missing something obvious. I enjoy the music.
Press on the bottom-left of the sreen which action you wanna do and then press on the object you wanna do it with/to. So Go+Lake makes you go to the lake. There isn't any puzzle behind that. It isn't my music by the way. Just copyright-free stuff from Youtube. If you need help, just ask. I got time.