The 2nd half of October comebacks will be a fierce battle between the top vocalists.

This week the most popular vocalists will be releasing many new songs, and will take over the autumn music charts. Lim Chang Jung released a new song after a 3 year break titled "A Guy Like Me," and demonstrated the power of the autumn vocalist. And he's given the green light for others to do the same. The biggest rival for the remainder of October will be MBC's "Infinite Challenge" Music Festival, but until October 26th when it is released, the vocalists will hold a fierce competition for the number 1 spot on music charts.

K.Will will be releasing his new song "You Don't Know Love" on October 18th. He hopes to make this song his 8th hit. He debuted in 2007 with the song "Left Heart," and followed up with hit songs such as "Dropping the Tears," "I Hate Myself," "My Heart Beating," "Please Don't..." and "Love Blossom." His songs are popular hit songs that have deep emotions etched into them. Hopefully his rhythmical new song will be one that goes along with the autumn weather.

"You Don't Know Love" is an acoustic modern R&B song with a main guitar melody, acid jazz piano, and a soft groove R&B rhythm. All of that, along with K.Will's soft vocals, is sure to create an amazing harmony. Since K.Will receives a lot of love as a vocalist from a wide range of fans, there's great expectation for his new song.

Park Ji Yoon, who made the change from sexy to folk, will be having her comeback on October 21st. She recently transformed into a singer songwriter, and worked with Yoon Jong Shin for her new album. In the midst of interest into her musical changes, fans got to take a peek at her teaser photo, released on October 14th. The photo featured the singer in a very deep low cut back black dress, which left a strong impression on fans.

Her agency Mystic 89 stated, "Park Ji Yoon plans to release 4 single albums for the 4 seasons in a year - autumn, winter, spring, and summer - and will be highly active showcasing her songs. This project will start off with this single album."

Another singer songwriter Jung In will be releasing her 4th mini-album on October 17th. Her title song "Autumn Man" (tentative translation) is a song sung by girlfriends for men who become lonely in autumn. This song was arranged by Primary, and will feature a blues rhythm and have a retro feel to it. The music video will also star Jo Jung Chi, her boyfriend of 11 years.

Jung In herself produced this album, and all 5 of the tracks are written by Jung In.

The ultimate "King of Ballad" vocalist Shin Seung Hoon will also be holding his comeback this autumn, and is expected to be the main event in the music market. Before his official comeback on October 23rd, he will be releasing the song "I've Changed A Lot." Just as the song indicates, we expect there to be a hot change. For the first time since his debut 23 years ago, Shin Seung Hoon collaborated with a rapper.

That rapper is none other than Dynamic Duo's Choiza. This song featuring the hip hop rapper Choiza will feature an acoustic guitar sound and hip hop beat, and is sure to be an addicting song. While working on this new song, Shin Seung Hoon worked with producer Kim Chang Dae to bring a trendy new feel to his music.

Will these amazing vocalists be able to compete with "Infinite Challenge" music festival and take charge of the music charts to November? Who will take the number 1 spot as the ultimate vocalist?