Mark Hosler Mark Hosler is lead singer of Negativland, the experimental music and art collective that has been recording music/audio/collage works since 1980, producing a weekly three hour radio show ("Over The Edge") since 1981, and performing live on occasional tours throughout America and Europe. Negativland have released 18 CDs, one video, and one book ("Fair Use: The Story Of The Letter U And The Numeral 2") since 1980. They were the subject of the 1995 feature film "Sonic Outlaws" by Craig Baldwin, and composed the soundtrack/sound design for a critical 1997 documentary on advertising, "The Ad and the Ego". Negativland coined the term "culture jamming" in 1984, and this phrase is now often used to describe the work of many different media artists and activists.