I caught up with them recently during rehearsals for Supermusician, their second full-length show and album that they're bringing to The Street Theatre this month, and listened as they bickered, explained their story, and made me laugh. Here is the interview in full.

Sally Pryor: Tell me about your childhood.

Otto: So we grew up just outside Berlin, and we just - I don't know that our childhood was much different to most people, you know. We were just playing, sometimes just playing drums on the pots and pans and stuff, it was a pretty ordinary childhood, but then one day...

Astrid: It wasn't just one day, it was my 12th birthday.

Otto: Yeah, well, it was Astrid's birthday and we were going to the zoo, and our parents were eaten by a lion.

Astrid: That's not right, they were killed by the train.

Otto: It was a lion that escaped from the zoo.

Astrid: We weren't anywhere near the zoo. We were catching a train to the zoo. There was no lion, you just got excited because we were going to see the lion.

Otto: It was a lion.

Astrid: They got squished by the train.

Otto: And then we got back to the house, afterwards, and we didn't have any parents. [Sound of SP snuffling quietly] Are you laughing?

Astrid: No, she's crying. Anyway, this nasty aunt and uncle - Bertha and Hans - came to stay with us and they were awful, they made us do these horrible jobs, like we had to chop wood and cook cabbage soup. And so I took Otto in the middle of the night because I think they were trying to kill us, and we ran away to Berlin, and we arrived in Berlin, it was the most amazing time. We thought it was just a big party in Berlin, but actually it was the night of the fall of the Berlin Wall. We thought it was like they were having a party in the street and there's fires everywhere.

Otto: I actually said I thought maybe people knew that we were coming. And so when we got to the town everybody was having a big party.

Astrid: You were crying, you wanted to go to sleep because you had a blister on your foot.

Otto: It was a long walk.

Astrid: I had to carry you on my back. And then we lived in a squat for quite a time.

Otto: You know what a squat is? No furniture, yeah. Everyone was in bands at that time, everyone in the block.

Astrid: Or they were artists, they were decorating the walls, so we would have these big parties in the warehouse and people would come from all over Berlin and we were experimental. Sometimes we would just make sounds scraping the floor with chairs. And then one day this elementary school was upgrading their instruments, and so there were all these child-sized instruments out on the street, and so I brought them home - a mini drum-kit, mini guitars, I brought them home for Otto and I, and we started playing proper instruments now, and then we decided, well we've got instruments, we'd better become the best band in the world. And we didn't know how to do that, so then we wrote a song. It's called Best Band in the World, it's on our Supermusician album, and so it all came true.

Otto: Now everyone knows.

SP: Do you still hold the title of Prince and Princess of the Berlin Underground Indie Rock and Europop scene.

Otto: Well, no one else really is trying.

Astrid: No one's trying for that. No one wants to be underground, everyone wants to be famous now. We never wanted to be famous, we wanted to be spooky and kind of like mysterious.

SP: Do you think you've found a niche in Australia?

Astrid: Well, we had this really bad promoter, and he puts us often in these comedy festivals, and it's been quite awkward because then people seem to find things to laugh about.

Otto: It was weird actually, because the first festival that we played in Australia was back in 2006, and we played the Adelaide Fringe Festival, and I thought, well, we are going to win this because I have the most amazing fringe. Like, it's very asymmetrical and it kind of goes over one eye, and I thought, we have this festival. And then the next one we played at was the Melbourne Comedy Festival and I thought, I don't know how we'll go here, because we're just a rock 'n' roll band, I don't see what's funny, but people were laughing from the start of the concert until the end.

Astrid: That's how we started, but we just did the Adelaide Cabaret Festival.

Otto: And we have played at the Woodford Folk Festival as well. And we opened for Amanda Palmer when she was touring around Australia, and we played with her in the United States and in Europe as well.

SP: Where does the name come from?

Astrid: The Red Dot is because when Otto was young he had all these pimples.

Otto: No that's not true. That's not the reason.

Astrid: I thought it was.

Otto: You said it was the "blood of our parents".

Astrid: But no one wants to talk about that, Otto, so I changed it.

Otto: But you can't just go round saying that I have pimples.

Astrid: You don't now, but you did when you were a teenager.

Otto: I did not, I didn't have any pimples.

Astrid: That's why you wear all that makeup.

Otto: That's not even true.

SP: Is it tough being brother and sister and touring, or does it make things easier?

Otto: We get on really well, it's easy for us.

Astrid: No. I don't think it's easy. You called the police the other day.

Otto: Oh yeah, I did, I called the police.

Astrid: I went out to have a good time.

Otto: She goes missing.

Astrid: I wasn't missing. When you go out, it's not missing. It just means you're out having fun and sometimes you don't take your phone with you.

Otto: Because I knock on Astrid's room and she's not there, and so I start getting really worried and then it turns into anxiety.

Astrid: And then you get pimples.

Otto: I do not.

Astrid: But when we're on stage, we rock out to the max. Like, if you were to get a whole kilo bag of sherbert, and like roll your body in the sherbert - first of all have a shower so you're wet - then roll sherbert all over your body and put lots of it in your mouth, then your whole body would be exploding with sherbert, that's what we are like onstage. We're like, explosion! Happening everywhere!

Supermusician by Die Roten Punkte is on at The Street Theatre, Saturday, October 15 at 8.00pm. Bookings and info: thestreet.org.au.