Some actors miss their girlfriends when they are shooting drama serials, but K-pop's Choi Min Ho missed his boyband.

Better known as the main rapper of the Shinee quintet, he took at least two months off from the group this year to star in a romantic comedy.

On filming To The Beautiful You (2012), about a girl pretending to be a boy in an all boys' school, he says via e-mail: "It was tough being 'alone' after having spent so much time with the group members."

Lucky for him then that he has reunited with them to tour. The band's second concert tour, Shinee Concert Shinee World II, has already taken them to Taipei and Hong Kong. They will perform at the Singapore Indoor Stadium on Saturday.This is their third time here this year, after Boyz Nite Out in June and the recent SMTown concert at The Float @ Marina Bay.

Choi, 20, says he will put his new-found acting skills to good use at their upcoming concert. Acting, he adds, was tough as he had to "perform emotions that I was not used to".

"Being both an actor and a singer, I want to figure out how to incorporate the two to improve my overall performance."

Even though the band - comprising Choi; Lee Tae Min, 19; Key (real name Kim Ki Bum), 21; Onew (Lee Jin Ki) and Kim Jong Hyun, both 22 were here last year for their Shinee World Concert, they promise that this Saturday's concert will be completely new.

Says Choi: "We have prepared a newly designed concert from the last one, including Jong Hyun and Tae Min's performance, as well as solo performances by individual members."

At the recent SMTown concert here, Kim and Lee sang Internet War, while Kim showed off his solid abdominal muscles.

Since their debut in 2008, the band have scored with catchy hits such as Ring Ding Dong (2009) and Sherlock (2012), which are choreographed with great dance moves.

They also stand out because of their keen fashion sense, working with popular South Korean designer Ha Sang Baek for many of their looks. Thanks to the music video for their 2009 hit Juliette, candy- coloured skinny jeans and high-top sneakers have been immortalised in the K-pop annals.

Their ever-changing image took another turn this year when they were styled like hippies, with tribal-inspired, baggy tops (Tae Min sported long locks and a headband), for their EP Sherlock.

Key explains: "Fashion is a big part of Shinee, so we are constantly studying and putting in lots of effort to show different styles and concepts on a daily basis.

"Rather than just put on designer or branded clothes, we are interested in clothes that grab our attention."

He adds: "I think my personal image is 'comfortable with vividness'."