A Radio Jockey or a RJ is a person who hosts a talk show on radio.. He/she hosts the show, reads the script, plays the music and audio advertisement at specific intervals, raises topics of concern, designs subjects for discussion and interacts with callers and listeners via telephone, email, social media and SMSs. Everything that he/she does should be appealing and entertaining. The RJ should be able to engage the audience with his/her voice and selection of words and how he/she presents the content before the audience does matter. Their job would include music programming, scripting, presenting radio shows, radio advertisements and lending voice to audio magazines and documentaries. A radio announcer works in the broadcasting industry and might assume various roles, such as reporting live sporting events, hosting a talk show, or playing music over the airwaves. Some radio announcers, such as a news broadcaster, might follow a script, while others ad lib the content of a program. The main duty of radio announcers is to present clear, informative and entertaining information to their audience. This often requires announcers to prepare for their broadcasts in advance in areas such as topic research, fact-checking and script or show outline preparation. Announcers and DJs may also have to compile song lists and prepare for personal interviews. Depending on the size of the radio station, announcers may have additional duties. The nature of this job usually varies depending on the radio show's format and primary focus. News announcers read scripted summaries of the major news stories, sports announcers call the game's play-by-play and provide color commentary, and talk show hosts will frequently speak their mind without scripted material. Radio DJs typically need to have a playlist ready, as well as provide comments regarding songs and bands.