A music creation application (app) displays, in one embodiment, a user interface configured to receive inputs to create music in a view hosted by a first text messaging app on a device. In one embodiment, the music creation app can be an extension app or plug-in of the text messaging app and can exchange music information with another music creation app on another device through a messaging system that includes the first text messaging app and a second text messaging app and one or more messaging servers.
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