With real tracks i tried to use that, a 4/4th song switching to 2/4th with a hold on instruments for one bar and back to 4/4th. Alas you'll find that when switching back to 4/4th the rendered realtracks are gone for a bar or so on the start of the following 4/4th bar. Is there a way around this? PS I wrote about this about a year ago and remember Peter Gannon mentioning something like an issue that would be looked into ... -F