Sheikh Kabir Helminski of the Mevlevi Order discusses zikr

The Threshold Society: Mevlevi Order of America
One Through Love

And remember your Protector and Sustainer,
O beloved Muhammad,humbly and with awe.
Use then a gentle voice, the words carried softly on your breath,
to praise Me in the morning and evening.
And do not be negligent in your remembrance.

--Quran al-A'raf 7:205--