Delta 99.1 FM Jakarta - Initially, Radio Delta was developed as a radio targeting the adult audience segment with an age range of 35-45 years old, having an established life, having a high position in the company, in government and in society. Most of the listeners are Jakarta's A-B class who have entered the phase of a calm but well established lifestyle. Initially, 1992 – 2011 served listeners by playing songs (products) playing Golden Memories songs, Sweet Song combined with blocking Jazz music shows and classical music inserts.