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I think I will have to go with 'interlude' but the site you suggest actually lists the 'interludes' as track 4, occurring between the two Acts, whereas La Calinda is track 6 or 7 (can't remember now). This has been my problem. I looked at several sites and they all spoke of an interlude but it occurred between acts and well before La Calinda.
I will post mine later this afternoon (always have to post early here) but if you get stuck let me know as I will keep a copy. Thanks for help