Within a Sky Full of Earth

Avant-garde means "advance guard" or "vanguard". The adjective form is used in English, to refer to people or works that are experimental or innovative, particularly with respect to art, culture, and politics.
Avant-garde represents a pushing of the boundaries of what is accepted as the norm or the status quo, primarily in the cultural realm. The notion of the existence of the avant-garde is considered by some to be a hallmark of modernism, as distinct from postmodernism. However, this is not true in the case of music as many pieces are still being released which are generally considered avant-garde in popular culture. Many artists have aligned themselves with the avant-garde and still continue to do so, tracing a history from Dada to the Situationists to postmodern artists such as the L=A=N=G=U=A=G=E writers in the 1980's to many art collectives in the "post-postmodernist" times of today.
[SOURCE WIKIPEDIA]