Data-driven Display of records with variable number of

Is this possible in xslt-1.0?

Given the following input, I want to transform the output such that I get
only the fields of each record which I specify in the headers element. I
want the order to also be the order in which they appear in the headers
element.  So if headers looks like:
<headers>
<year/> <artist/>
</headers>
then I want each record in the output to only contain the year and artist
fields, in that order.

I can't seem to write an xPath expression for this kind of transform because
xPath node tests cannot contain variables. The expression would need to look
something like "/cds/cd/$field", where $field would contain the name of one
of the nodes listen in /headers (see xml below).

Thanx for any suggestions...

-- Rich

Input:
<?xml version="1.0" encoding="ISO-8859-1" ?>
<?xml-stylesheet type="text/xsl" href="transform.xsl"?><cds>
<title>My CD Collection</title>
<headers>
<title/>
<artist/>
<year/>
</headers>

<cd>
<artist>Rich Caloggero</artist>
<title>A Taste of Tranquility</title>
<year>2004</year>
<label>Touch the Sky Music</label>
</cd>

<cd>
<artist>The Grateful Dead</artist>
<title>Europe 72</title>
<year>1972</year>
</cd>
</cds>



-- Rich
"In the end, our society will be defined not only by what we create, but by
what we refuse to destroy."
-John C. Sawbill (1936-2000), president, The Nature Conservancy, 1990-2000