Qāriʾ

A qāriʾ (Arabic:قَارِئ‎, plural قُرَّاء qurrāʾ; English: "reader") is a person who recites the Qur'an with the proper rules of recitation (tajwid).

Although it is encouraged, a reciter (Qari) does not necessarily have to memorise the Qur'an, just to recite it with proper rules with melodious sound.