According to News1�on February 6, 'Idol Producer' used the song "All Day" without proper authorization. The mission song from 'The Unit' was played during Yuehua Entertainment�trainees' entrance on the Chinese show.�

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However, producers of 'The Unit' confirmed 'Idol Producer' did not properly seek for permission and the use of "All Day" is unauthorized.�

'Idol Producer' has already been involved in a plagiarism controversy for blatantly copying Korea's 'Produce 101'. Netizens are continuing to criticize the show for ongoing plagiarism, commenting, "Wow... I thought they purchased copyright but it was just stealing", "?? It's so similar. I thought it was a remake", "They copy everything -.-"