There are several artists who have gone by the name One Two: 1. a Danish pop/rock duo comprising Nina Forsberg and Cæcilie Norby.
2. a Korean rap duo comprising Oh Chang Hun and Song Ho Bum, who had a short career.
3. for the French electropop / 60s britpop duo, see One-Two.
4. A Hip Hop artist from Washington DC also know as "Dimensions" 1. One Two* were a Danish pop/rock duo formed in 1985 featuring Nina Forsberg and Cæcilie Norby.

Read more about One Two on Last.fm.