Boa’s 23rd single “Love Letter”, which debuted in Japan on Sept. 26, was released in Korea Thursday.

It came out in two versions, on CD and as a CD/DVD package, and includes three songs. Boa wrote the lyrics of the title song, a ballad, about a girl who wants to confess her love.

“Diamond Heart” is a dance tune with a house beat from a Toshiba commercial featuring the K-pop star while “Beautiful Flowers” has been the theme song of Japanese broadcaster TBS’ baseball program “The Pro-Baseball” since April.

The single album also has a hidden track, an acoustic mix of “Love Letter.”