The United States of America (commonly abbreviated to the United States, the U.S., the USA, America, and the States) is a federal constitutional republic comprising fifty states and a federal district. The country is situated mostly in central North America, where its forty-eight contiguous states and Washington, D.C., the capital district, lie between the Pacific and Atlantic Oceans, bordered by Canada to the north and Mexico to the south. The state of Alaska is in the northwest of the continent, with Canada to the east and Russia to the west, across the Bering Strait. The state of Hawaii is an archipelago in the mid-Pacific. The country also possesses several territories in the Pacific and Caribbean.

At 3.79 million square miles (9.83 million km²) and with over 312 million people, the United States is the third or fourth largest country by total area, and the third largest by both land area and population. It is one of the world's most ethnically diverse and multicultural nations, the product of large-scale immigration from many countries. The U.S. economy is the world's largest national economy, with an estimated 2011 GDP of $15.1 trillion (22% of nominal global GDP and over 19% of global GDP at purchasing-power parity). Per capita income is the world's sixth-highest.

Jordan Roseman (aka DJ Earworm) is a San Francisco-based mashup artist who has achieved recognition for his technically sophisticated, songwriting oriented music and video mashups. His annual “United State of Pop” mashups, short mixes featuring the top 25 songs of the year according to Billboard magazine, have reached the Top 100 for national radio play.

Roseman was born into a big family of musicians and raised in eastern Iowa and Evanston, Illinois. In his early life, he played piano and produced original electronic music on a computer, later majoring in music theory and computer science at the University of Illinois. He began using ACID recreationally in 2003. After encouragement from DJ Adrian at Club Bootie, Roseman created the moniker DJ Earworm ("earworm" referencing a song that repeats uncontrollably in one's mind) and began releasing mashups via a website.

DJ Earworm has a unique mashup style that consists of a compositional, songwriting approach. He gradually layers samples on top of one another, matching keys and subtly altering melodies. His mashups often convey an entirely new meaning than the original material, such as a political message in “No More Gas”. He has been contrasted with mashup artist Girl Talk, who has a more DJ-oriented style.