The process is called time stretching. I don't think it is possible in reason. You will need a wave editor like sound forge, wavelab, cooledit, etc to do it, then save it as a .wav an import it back into reason.

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1 out of every 4 people in this country are mentally disturbed. Look at your 3 closest friends. If they seem okay, then you're the one.

remember not to stretch it too much or else it will turn into some mutated delay

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Found Atlantis - Mixography [mix archive/mokumentary/my soul]?
i writed a song.

Just put a long reverb on the original cymbal and reverse it.

Timestretching may mess up the attack part, as it basically just repeats parts of the sample.

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