Question: Jason Eckardt, is an American composer, he began his musical life playing guitar in heavy metal and jazz bands and abruptly moved to composing after discovering the music of Anton Webern, was an Austrian composer and conductor, and was at the core among those within, and more peripheral to the circle of what?
Sentence (from "Passacaglia for orchestra (Webern)"): The Passacaglia for orchestra, Opus 1, is the first published composition of twentieth century Austrian composer Anton Webern.
Relevant evidence: No