Oh Sung Jong, previously known professionally as Oh Tae Ha and currently known as IONE, is a South Korean singer, dancer and former member of SPEED (스피드).

Before debuting, he was a trainee at DSP Media and was set to debut as part of A-JAX, but he decided to leave the agency just before the group debuted.

MBK Entertainment (MBK엔터테인먼트, formerly known as Core Contents Media) debuted their idol group, COED SCHOOL, in September 2010. The agency later decided to create two separate groups, one for the boys and another for the girls. The newly formed boy group SPEED released a pre-debut single album titled "Hommage to Lovey-Dovey" in January 2012 as a tribute to T-ARA's "Lovey-Dovey". However, two members decided to quit in September 2012, so he was added one month later to replace them.

He made his debut (under the stage name Taeha) in January 2013 as SPEED's lead vocalist with their digital single "Speed of Light".

In November 2015, MBK announced the group's disbandment. In early 2016, he made his debut as a solo artist (now using the stage name IONE) with the digital single "Back". He also promotes occasionally with former groupmate Woo Tae Woon.

He spent time at several agencies after departing from MBK but is now an independent artist.

(Source: MyDramaList) Edit Biography