[3] He also released two Korean singles entitled Men from Mars, Women from Venus[4] and S-Wave 1st Present,[5] and contributed "Lonely Girl" with Kim Kyu-jong from Bad Girl Diary OST.

On March 8, 2011, Kim released his debut solo mini album My Girl[6] with music videos for the two lead tracks "oH!

[8] The album includes five songs, and a 25-minute drama MV starring Kang Ji-hwan, Lee Ki-woo, and himself.

[11] Ticket sales were pre-released on February 12[12] Kim Hyung Jun "The First", the name of the concert, was held on March 9 at the Woori Art Hall at the Olympic Park, organized by SPLUS Entertainment and managed by SH Creative Works.

The following is an incomplete list of Kim Hyung-jun's concerts, major fanmeetings, and tours.