There is more than one band with the name UN (or Un).

One (Un) is a group featuring Marcia Bassett (Double Leopards), Tara Burke (Fursaxa), Grant Acker, and Tom Roach. They had two releases on the Siltbreeze label before disbanding in 1999.

The other, UN (유엔), is a male duo from Korea. Although their music is a mix of different genres,
most of their songs are predominantly pop ballads with a twist of R&B.

UN is an acronym for "United N-generation".

In 1999, the duo, who are both from the top universities in Korea,
got together and formed UN but it wasn't until June of 2000 that they released their first album.

In September 2005, 5 years after their debut and 5 albums later,
their management agency, Laful Entertainment,
anounced that the duo will disband after the expiration of their contract.
The two members will focus on their seperate careers as individual actors and singers.

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Another band with the name UN--->

Not since Jennifer Herrema mumbled her way through the first couple of Royal Trux albums has a band extracted such beauty from disjointed chaos. Marcia Bassett's slurred vocals recall Nico after a few too many drinks, yet she sounds absolutely sublime when paired with guitarist Grant Acker's minimal strumming.

UN's self-titled debut is a masterwork of bedroom psychedelia. "Sixty Bux" moves in slow motion, as UN attempts to create a soundtrack for your next drugged stupor. "Fast Money Blues" has absolutely nothing formal to do with the blues, but wallows in as much sadness and pain as John Lee Hooker. The cassette release has two side-long practices that are actually worth hearing. Messy and incoherent, UN sounds as if recording only takes place after long bouts of sleep deprivation, but few can match the utter desolation of this deceptively simple music.
[Bill Cohen / Ben Goldberg]

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Another band with the name UN--->

Grinding industro-electronics from HALO drummer R.Allen, a grimy & claustrophobic soundtrack to every gore film ever made.