Tempo
Audio loops have been used in contemporary music for decades and work particularly well, with material that is "on-the-beat" or doesn't have elaborate tempo changes occurring throughout a song.
Looping
Rehearsal
In the context of a musical performance, it is possible to use looped content as a means of rehearsal however a more meaningful method is likely programming a song from start to finish, as sections can be woven together rather than butted up against one another.
Performance
By specifying the start and end times of a looped phrase, it is possible to rehearse song sections, without having to load up a workstation and associated software and instead a Web Browser can be used to assist with learning the content of a song.
Fading
Audio loops, will normally have a cross-fade, that becomes part of the waveform however on the web; a cross-fade must be programmed.
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