Singer Lim Young-woong's 1st album 'IM HERO' 'Love letter' Music Video is hot. On May 22, last year, 'Love letter' Music Video, which was released on Lim Young-woong's official YouTube channel, exceeded 18 million views as of July 31st. 'Love letter' is a song written and composed by Song Bong-ju of the group bicycle scenery, and Park Yong-joon participated in the arrangement. It features romantic and lyrical lyrics with feelings of writing Love letter. Music Video has a romantic look in the background of Paris. On the other hand, Lim Young-woong donated a total of 200 million won to Fruit of love with 100 million won each with his company fish music under the name of 'Hero Age' on the 17th.