The 1920s was the decade that started on January 1, 1920, and ended on December 31, 1929. It was the third decade of the 20th century. It is sometimes referred to as the Roaring Twenties or the Jazz Age, when speaking about the United States, Canada or the United Kingdom. In Europe the decade is sometimes referred to as the "Golden Twenties" because of the economic boom following World War I.

Since the end of the 20th century, the economic strength during the 1920s has drawn close comparison with the 1950s and 1990s, especially in the United States of America. These three decades are regarded as periods of economic prosperity, which lasted throughout nearly each entire decade. Each of the three decades followed a tremendous event that occurred in the previous decade (World War I and Spanish flu in the 1910s, World War II in the 1940s, and the end of the Cold War in the late 1980s).

However, not all countries enjoyed this prosperity. The Weimar Republic, like many other European countries, had to face a severe economic downturn in the opening years of the decade, because of the enormous debt caused by the war as well as the Treaty of Versailles. Such a crisis would culminate with a devaluation of the Mark in 1923, eventually leading to severe economic problems and, in the long term, favour the rise of the Nazi Party.

Justin Drew Bieber ( /ˈbiːbər/ BEE-bər, born March 1, 1994) is a Canadian Pop/R&B singer-songwriter, musician, and actor. Bieber was discovered in 2008 by Scooter Braun, who came across Bieber's videos on YouTube and later became his manager. Braun arranged for him to meet with Usher in Atlanta, Georgia, and Bieber was soon signed to Raymond Braun Media Group (RBMG), a joint venture between Braun and Usher, and then to a recording contract with Island Records offered by L.A. Reid. Bieber's debut single, "One Time", was released in 2009 and peaked in the top twenty in Canada and charted in the top thirty in several international markets. His debut album, the seven-track EP My World, followed in November 2009, and was soon certified platinum in the United States. He became the first artist to have seven songs from a debut album chart on the Billboard Hot 100.

Sara Niemietz (born 1992) is an American singer/songwriter and actress based in Los Angeles.

Born in Chicago, Niemietz currently resides in Los Angeles. She graduated in 2010, having been active in the Theatre Department at Saugus High School. In addition to cultivating her professional career, Niemietz played Luisa in the school's production of The Fantasticks during her senior year.

Delivering Chicago and Broadway theatre performances, beginning at age 9, Niemietz continued her career in California with television roles, film roles, soundtrack productions, music CDs and a role in Jason Robert Brown's musical, "13" at the Mark Taper Forum, Sara also maintained an "A" level GPA through High School.

Niemietz first appeared on stage at age 4, when BJ Thomas helped Sara on to the stage. On video, BJ Thomas appears delighted that Sara seems completely at ease with singing his signature song in front of an audience. Thomas can be heard to say, "I can't believe she knows the words!" and later repeats an inaudible comment from the audience, "...she knows all my songs?" The title of the song was, "Hooked on a Feeling"