박진영
While "Someday" fared well commercially and reached number one on the Gaon Digital Chart, it was embroiled in controversy after the song's writer and composer, Park Jin-young, was accused of plagiarizing the song, "To My Man". Songwriter Kim Shin-il won his plagiarism lawsuit against Park Jin-young in 2013, however, an appeal to the Supreme Court of South Korea led to an eventual High Court retrial in 2015.