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Recycle is a loop editor designed for use with Propellerhead’s Reason Software.
The principal idea of ReCycle is to alter the tempo of a music loop without changing its pitch or otherwise altering its sound. ReCycle does this by “slicing” loops into a series of separate “beats” or “hits” and altering their timing (or even quantizing them) without altering the length of the individual slices, thus allowing the loop to play at a different speed whilst using the unmodified sounds for each individual slice/drum hit, a process which fully preserves the original pitch of the loop while allowing a great variety of speed/timing tweaks. ReCycle can also assign each successive slice to a respective MIDI note on a scale. ReCycle was the first program to popularize the idea of loop slicing.