In Ho Jin is a South Korean singer, professor, and member of SWEET SORROW (스윗소로우). He graduated from Sangmoon High School and later obtained a bachelor's degree in Chemical Engineering from Yonsei University.

During his college years, he was part of the glee club, and there, he met Song Woo Jin, Sung Jin Hwan and pianist Kim Young Woo. All four, plus four other friends, created a cappella group who they called SWEET SORROW using the quote "Parting is such a sweet sorrow" from Shakespeare's "Romeo and Juliet" to remind them of the hardships they faced in the past.

He decided to pursue a music career and made his debut in 2002 by performing at college festivals and events until they won the Daesang at the Yoo Jae Ha Music Competition and signed a contract with Mezoo Cultures. The group released their first studio album, "Sweet Sorrow", in November 2005 and have continued to release albums, EPs or have sung OSTs for several dramas ever since. The group is now self-managed after the members created their own label.

After a two-year hiatus, the group returned in 2019 when they joined the female vocal group THE BARBERETTES and performed together as SBSB (스바스바).

He is also a professor of Applied Music at Yonsei University.

(Source: MyDramaList) Edit Biography