The Ruling on Describing a Singer as a Soldier of Iblis

Question:
Is a singer considered one of the soldiers of Iblis? Is his testimony accepted? And is a Muslim held accountable if he says to a person who is disobedient or an open sinner, "You are one of the soldiers of Iblis," or "You are a devil"?

Answer:
He who calls to evil is one of the two groups, or rather, one of the soldiers. Whoever calls to sins or religious innovations (bid'ah), whether through singing, through speech other than singing, through sermons, or otherwise, and whoever calls to religious innovation (bid'ah), associating partners with Allah (shirk), or sins, including singers, musicians, the people of innovation, and those who call to unlawful sexual intercourse (zina), falsehood, and all sins, they are all soldiers of Satan, the party of Satan. They are the callers to corruption, while the party of the Most Merciful are the callers to truth and guidance. So whoever calls to truth by his action or his speech is from the party of Allah, and whoever calls to sins, religious innovations (bid'ah), and associating partners with Allah (shirk) through singing, through other speech, through sermons, through writings, or otherwise, is from the party of Satan. We ask Allah for safety.