Mainstream urban is a term use to describe a radio format similar to an urban contemporary format. The format differentiates itself due to two factors: playlist composition and target demographic. The majority of the stations cater to younger listeners; they tend to have a more hip-hop-heavy playlist compared to the R&B-heavy playlist that is very common among urban contemporary-formatted radio stations. Also, mainstream urban stations tend to target both genders with its playlist compared to urban contemporary station that tend to target mainly females. The term 'mainstream urban' was coined in the mid-1990s when radio stations started featuring primarily different styles of current hip-hop and R&B when it became very popular. The target demographic of the format is usually the 18- to 34-years-old males and females