"Arirang" is a Korean folk song, sometimes considered the unofficial national anthem of Korea. Arirang is an ancient native Korean word with no direct modern meaning.

Many variations of the song exist. They can be grouped into classes based on the lyrics, when the refrain is sung, the nature of the refrain, the overall melody, and so on. Titles of different versions of the song are usually prefixed by their place of origin or some other kind of signifier.

The original form of Arirang is Jeongseon Arirang, which has been sung for more than 600 years. However, the most famous version of Arirang is that of Seoul. It is the so-called Bonjo Arirang, although it is not actually "standard" (bonjo: 본조; 本調). This version is usually simply called Arirang, and is of relatively recent origin. It was first made popular by its use as the theme song of the influential early feature film Arirang (1926). This version of the song is also called Sin Arirang (Shin; "new") or Gyeonggi Arirang, after its provenance, Seoul, which was formerly part of Gyeonggi Province. (The titles Bonjo Arirang and Sin Arirang are also sometimes applied to other versions of the song.)

Seongha Jeong (정성하) (colloquially: Sungha Jung) (born 2 September 1996) is a South Korean professional acoustic finger-style guitarist who has risen to fame on YouTube and other sites. As of 2012, his channel had over 17 million views, with his videos getting a total of over 454 million views, and also over 726,000 subscribers.

Seongha typically takes three days to learn and practice a new piece, and video-record it for upload onto YouTube. His genre selection is rather broad, as he learns and plays many pieces that are playable on guitar, therefore consequently spread across numerous genres.

Seongha has won 13 awards on YouTube, including 6 "#1" awards. Also on YouTube, Seongha has 523 videos with over one million views. Seongha's video with the most views is the one which shows him playing the theme from "Pirates Of The Caribbean".

In 2010, he was featured on Narsha's solo album "Narsha" for the song "I'm in Love" Seongha has composed 18 pieces as of February 2011, two of which are featured in his debut album, "Perfect Blue". He released his second album, "Irony", on 21 September 2011.