Susan Philipsz: Living in Berlin, the history  is so raw and you still feel it. I think it's that it doesn't  want to hide its past. When I first came to Berlin, this was one of the first  places I came to actually. Train stations, they're very evocative  places, places of departure and separation. That has a melancholy feel  about it, I think, the station. I love that sound. I'm interested in the emotive and  psychological effects of sound. Often I'm just looking for a place that has an  interesting acoustic or architecture history. Like in Kassel, for instance, it was the  atmosphere of the train station that drew me. “Study for Strings” started from  standing at the platform's end and thinking about sound coming from a distance. I discovered that Kassel is where they made  major deportations of the Jews to Theresienstadt, which was a concentration camp where  they sent all the creative people. I started thinking about Pavel Haas  who'd composed this composition, “Study for Strings,” while  he was interned in the camp. It was to feature in this  propaganda movie for the Red Cross. They wanted to pretend that  everything was great in the camp. It was really tragic because it was straight after  it was shot, they were all sent to Auschwitz. In the original composition,  it was a 24-piece orchestra. What I decided to do was to  record just two of the parts. Silence really makes you think about the absence  of the other performers who would've been killed. Eoghan McTigue: There was never a point where we were  working together as a collective. It just seemed to develop out  of our shared life together. After we moved to Berlin, it became  clear that Susan was getting very busy. I started to manage some of Susan's productions. Susan is much more intuitive and can determine  the tone or the atmosphere of a space. Susan has a very good understanding of space, when a space is layered and  when the meaning is just there, just below the surface, and then just doing something very  minimal to let it reveal itself. Susan Philipsz: I was invited to make a work that  marks the 80th anniversary of the annexation of Austria to Germany as  that happened after Hitler's speech. It's not something that they're proud of,  but they want to acknowledge their part in it. With each new project in public  space, I make a sound test just to get an idea of how the sound  would be in this particular space because sometimes it can do  really unpredictable things. You can place anything in the Heldenplatz, I mean and it will take on a political connotation because of the context. At the beginning, I tested a work which used the sound of a viola. And another work where I actually used my voice. Singing has always been part of my life, singing with my sisters. Then I was in a band for a little while. Then I became aware of what happens when you project your voice into a room  and how it can define space. I think it's clear that I don't have a trained voice. I'm singing in a way that you  might sing if you were on your own. The songs I've sung in the supermarket  I originally performed live where I sang over  the PA system at hourly intervals. It has quite a disarming effect because you feel  like you're listening to something quite private. I'm trying to create this sense of  solitude in this very public place. I thought of songs as found objects. Singing them unaccompanied and  then placing them in a particular context could make you see the place in a new way, or the words might take on a new meaning. The song “Lowlands,” which was  this old 16th century Scottish ballad about a sailor who comes back to  say a final farewell to his loved one, it's a very sad lament, but the context  prevents you from really being moved. Recording for my voice, or battling with  the sounds of the trains and the traffic, you're all of a sudden aware  of where you are because the ambient sound is really loud and hostile. When I was really young, I was more interested in the historical part of the museum  rather than the painting galleries because I found that really boring. “War Damaged Musical Instruments” is a work that  has been going for a few years now. I've been recording these musical  instruments that have been damaged in war. The first ones I came across  were the ones here in Berlin. That led me to different musical  instrument museums here in Germany. It was clear to see that these instruments  could never play music anymore. They were so badly damaged. But  they still could produce sound. Sometimes it would be a very fragile, delicate  sound, and it was really more about the breath. I became interested in breath  being a metaphor for life. Each of the speakers plays a tone from the  “Taps” and represents a different instrument. Originally it was used on the battlefield. It was one of the signals that  meant it was safe to come back. It makes you wonder who was the last person  to have played it and what happened to them. As a student I wanted to make political art with a  capital P, but I was never happy with the results. Those political themes come through  the work in a more subtle way. In Vienna, the work that was the  most successful was the sound of me rubbing the rim of four crystal wine glasses. It does have this kind of feeling of a voice. I wanted to give voice to those forgotten  voices who were persecuted during the Holocaust. By defining the space with sound, you draw  attention to and remind people what happened here. Sound can really act as a trigger for memory, then  can bring you back to a particular place and time. I wanted to bring those voices  from the past into the present.