A nasheed (Arabic: singular نشيد nashīd, plural أناشيد anāshīd, also nashwad (pl.), meaning: "chants"; also nasyid in Malaysia and Indonesia) is a work of vocal music that is either sung a cappella or accompanied by percussion instruments such as the daf. In general, Islamic anasheed do not contain lamellaphone instruments, string instruments, or wind and brass instruments, although digital remastering – either to mimic percussion instruments or create overtones – is permitted. This is because many Muslim scholars state that Islam prohibits the use of musical instruments except for some basic percussion.