In Sesamstrasse episode 2289 (& later repeated as episode 2522), Rumpel are making a lot of noise & Finchen asks him why he has to make so much noise. Rumpel replies that it's cause he is a Grouch, he also says that he wished he lived on a different planet a planet were he could make all the noise he wanted & that planet would be called Grautschonia. Finchen says that she would love to see such a planet. Finchen calls on Rumpel & Karl Heinz as the rocket are ready for take off.
Finchen isn't surprised of how the planet looks like after they landed on Grautschonia. Shortly after a alien stops them, it turns out to be a space Grouch called Rufus & it's his planet. Rumpel introduces himself as being a Earth Grouch from Sesamstrasse. Rufus thinks Finchen is a funny looking Grouch, so Finchen has to explain she's a snail. Rufus & Rumpel quickly agree that theres nothing better than loud noises.
Rufus & Rumpel sings a song about being a Grouch & making noises. Rufus & Rumpel, after the song start to make various noises. Finchen begins to miss her leaf pile & she asks Rumpel if he wants to go back home. Rumpel thinks about it & realizes that if he stays there won't be any people to complain about the noise he makes, & then whats the point of making all the noise, so he decides to travel back with Finchen.
Back on Sesamstrasse Rumpel continues to throw things out of his rain barrel to make noise & Finchen once again asks him not to make that much noise & leaves. Rumpel is happy loud noises need to be heard by other people in order to be fun.