Bloch’s philosophy of music is one of the most interesting of the twentieth century, particularly in the context of Marxist aesthetics. This article focuses on the various peculiarities of this thought, which seldom are highlighted. Firstly, through a new analysis of the musical sections of Spirit of Utopia and The Principle of Hope, the relation between utopia and music will be discussed in Sections 2 and 3 in order to show the originality of Bloch’s refusal of the Marxist base-superstructure model in the field of aesthetics. In contrast to the other philosophies of music, the study of music inspires theoretical speculation in Bloch’s thought and not vice versa. In order to demonstrate this connection, in Sections 4 and 5, the idea of the ...