Any creative group active in the innovation and application of new concepts and techniques in a given field (especially in the arts)

Avant-garde music is music that is considered to be at the forefront of innovation in its field, with the term "avant-garde" implying a critique of existing aesthetic conventions, rejection of the status quo in favor of unique or original elements, and the idea of deliberately challenging or alienating audiences.

Avant Garde was a magazine notable for graphic and logogram design by Herb Lubalin.

Radically new or original