A nasheed (Arabic: singular نشيد nashīd, plural أناشيد anāshīd, meaning: "chants") is a work of vocal music, partially coincident with hymns, that is either sung a cappella or with instruments, according to a particular style or tradition within Islam. Nasheeds are popular throughout the Islamic world. The material and lyrics of a nasheed usually make reference to Islamic beliefs, history, and religion, as well as current events.