This essay will explore Gustav Mahler’s treatment of time and space in his First Symphony by processing his experiences and memories into the music. In the music analysis, I will argue for and categorize the use of breakthrough as Mahler’s attempt to use his music as a key to create “another world” beyond the irreversible time and space. At the same time as he in a reflexive and retrospective point of view tries reveal a relationship between the past and the present that has not been covered by the obscurity of experience.