Bilal ibn Rabah

Bilal ibn Rabah (Arabic: بِلَال بْن رَبَاح, romanized: Bilāl ibn Rabāḥ; 5 March 580 - 2 March 640 CE), also known as Bilāl al-Ḥabashī or simply Bilal, was a close companion of the Islamic prophet Muhammad. Born in Mecca, he was formerly enslaved. He is considered the first muʾazzin (caller to prayer) in Islam, personally chosen by Muhammad for his deep and melodious voice. He is often regarded as the first African or Black Muslim.

Source: Wikipedia — https://en.wikipedia.org/wiki/Bilal_ibn_Rabah