> I'm working on a track where the vocalist hits a high note and I > want to get it to sustain for about 30 seconds or more, All the suggestions so far are good to which I'd add that taking a piece of the middle and, immediately after it, inserting the same piece backwards, then forwards again, can make an imperceptible transition. Best Wishes, Michael A. Levine www.MichaelLevineMusic.com