Rainbow's Jisook has set out to support her former university professor and senior singer, Jang Hye Jin, who's just released a new album! Through Rainbow's official Facebook page, Jisook wrote, "Professor, let's make a daebak together!" She went on to share a photo of her receiving a one-on-one vocal lesson from the senior. She wrote, "I've always loved listening to Professor Jang Hye Jin's songs, it's such an honor to be able to receive a private vocal lesson. At first, I was really nervous because she's such a big senior - but she's also caring and kind, so it was really comfortable throughout my lesson. I feel like I've learned a lot for my singing." Jisook continued, "Congratulations on your remake album, 'I Loved You', professor! I hope that both professor and Rainbow can earn great results." Jang Hye Jin released her second remake album on April 12th and is promoting alongside Rainbow, who made their comeback with "To Me" on the 7th. - Pics 1-3:  "Professor Jang Hye Jin ? Let's daebak~!!!!*^^*" Pics 4-8:  "Bonus~ Pictures of Jisook and the campus of Hanyang Women's University on a spring day?" [gallery columns=4] Source: Newsen via Nate Photos: Rainbow's Facebook