In the video Astronaut Chris Hadfield, along with fellow Canadian singer Ed Robertson of "Bare Naked Ladies", sings a specially composed Cosmic Duet.
Back down on Earth, Hadfield explained why this was so special to him. "Music is an important part of being human and to have the chance to play and sing and write music in that new place for humanity, I think is also important."
Earth's loftiest recording studio produces quite a range of music, as can be heard in the video. NASA astronaut Cathy Coleman played the ISS's first duet with one of her music idols, Ian Anderson from the band Jethro Tull.
As with most things sent up to the ISS, these can't just be ordinary instruments that they are playing. Sergey Krikalyov, head of the Star City Cosmonaut Training Center explained to RT
"To make their life a little brighter, a guitar was arranged for them. Getting it on board was a hassle though. They had to relax the strings, and added foam rubber to prevent vibration."
Music is all about sharing, as Hadfield found out when he first time he played in space, with the crew of the Russian space station Mir, back in 1995. It is a great way of sharing the emotions of the space crews.
For instance, you can experience Ron Garan's disappointment on finding out that his return to Earth was delayed by two months, by listening to him sing the moving song "Got those Space Station Blues."