you should absolutely include delerium feat. sarah mclachlan - silence (AIRSCAPE remix)
that'll kill them. that track was one of the first ones i downloaded; it made me crave for more. some of the other tracks that got me into trance would be
matt darey feat. marcella woods - beautiful
william orbit - adagio for strings (ATB remix)
dario g - dream to me (airscape remix)

and if you want to completely amaze them, play tiesto's ISOS2 to them, although i wouldn't reccomend it. it's too good, and you might spoil it for them.

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