The Afghan concept of music is closely associated with instruments, and thus unaccompanied religious singing is not considered music. Koran recitation is an important kind of unaccompanied religious performance, as is the ecstatic Zikr ritual of the Sufis which uses songs called na't, and the Shi'a solo and group singing styles like mursia, manqasat, nowheh and rowzeh. The Chishti Sufi sect of Kabul is an exception in that they use instruments like the rubab, tabla and harmonium in their worship; this music is called tatti("food for the soul")