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Newer mobile phones allow the users to associate different ringtones for different phonebook entries. Many also allow users to create their own music tones, either with a "melody composer" or a sample/loop arranger (such as the MusicDJ in many Sony Ericsson phones). Often these are native formats only mosquito ringtones available to one particular phone model or brand. However, other formats, such as MIDI or MP3, are often supported; they must be downloaded to the phone before they can be used as a normal ringtone. Commercial free ringtones take advantage of this functionality, which mp3 ringtones has led to the success of the mobile music industry. Southern Rapper Chamillionaire was the first to have a ring tone go 3x Platinum for the hit single "Ridin". He now has his own category on certain phones.

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