It is music that may have never been heard again ...
But a revival of works by composers lost to Nazi concentration camps has made it possible.
Irmgard Hanner is a survivor of the Terezin, or Theresianstadt, concentration camp in what was then Czechoslovakian territory occupied by Germany.
She says she admires that the works will be given a new life.
"At least, it gives them the recognition that they deserved."
The concert, known as A Voice for the Silenced, became a personal project of sorts for the grandson of Holocaust survivors.
Years ago, Nick Deutsch, now artistic director of the Australian National Academy of Music, was asked to play at a concert in Leipzig, Germany, for survivors of the Terezin camp.
It was during that time he uncovered an octet by composer Gideon Klein.
Mr Deutsch says it awoke an interest in him to look for further works.
"As a musician, as a performer, we are always looking for new inspirations and new repertoire, and this is a repertoire I came across some years ago and found fascinating."
Most of the composers whose music is featured in the concert in Melbourne died in Terezin, near Prague.
Mr Deutsch says one of the works by Gideon Klein was written before he was sent to the camp, then found in unfinished condition.
"In a last desperate act to try and save some of his works, they were put in a suitcase and given to a family relative, which was probably placed in an attic and forgotten for 50 years. And it was only in 1990 where it was discovered."
Academy of Music musician Stephanie Dixon says the music offers an insight into the life and times in which it was written.
"There was so much turmoil going on around this time, but even before the war actually started. It's interesting thinking about what was going through the minds of the composers and what sort of emotions that they would have been experiencing. And that's coming through their compositions and through their music."
Nick Deutsch says he hears a lot of optimism in some of the works, which he says he finds beautiful.
"They decided to continue with their lives, continue with their passion, which was composing and making music, and that is definitely audible ... that is definitely audible in these works."
Organisers say it is not a concert intended to draw sympathy, but rather to expose and celebrate the works as musical masterpieces of the 20th century.
International musicians also feature in the concert and support the cause.
One is Silvia Careddu, recently appointed principal flute for the Vienna Philharmonic.
She says she would like to see the works incorporated into the mainstream music world.
"They should be, actually, now in the repertoire, like Schulhoff or Haas, who we play in the next concert. The names are not so well-known. Another one is Smit. There are so many that nobody knows. They are like forgotten completely."
As a Holocaust survivor, Irmgard Hanner says the revival of the music is a strong lesson.
"I think it gives hope. That music gave hope, because the whole story about it is that evil should not triumph over good. I think that's what it portrays."
