Jordan Roseman is a San Francisco-based mashup artist who has achieved recognition for his technically sophisticated, songwriting oriented music and video mashups. wikipedia.org
Definition #2 for "dj earworm"
DJ Earworm is the moniker of San Francisco disc-jockey Jordan Roseman. He is best known for his United State of Pop remixes, which are remixes he has released at the end of every calendar year which mashes up the Top 25 Billboard pop hits from the previous year.