I have been trying to add tests to my xsl:apply templates elements but I keep getting an error that says "The expression does not evaluate to a node-set." I am wondering if someone could point out what I am doing wrong to point me in the right direction.

Here is my XML

```
<?xml version="1.0" encoding="utf-8"?>
<catalog>
<cd>
    <title>Empire Burlesque</title>
    <artist>Bob Dylan</artist>
        <band>
            <guitar>Joe</guitar>
            <drums>Rachel</drums>
            <bass>Mike</bass>
        </band>
    <country>USA</country>
    <company>Columbia</company>
    <price>10.90</price>
    <year>1985</year>
</cd>
<cd>
    <title>Hide your heart</title>
    <artist>Bonnie Tyler</artist>
        <band>
            <guitar>Cat</guitar>
            <drums>Paul</drums>
            <bass>Bobby</bass>
        </band>     
    <country>UK</country>
    <company>CBS Records</company>
    <price>9.90</price>
    <year>1988</year>
</cd>
<cd>
    <title>Greatest Hits</title>
    <artist>Dolly Parton</artist>
        <band>
            <guitar>Eric</guitar>
            <drums>Bill</drums>
            <bass>Jason</bass>
        </band>     
    <country>USA</country>
    <company>RCA</company>
    <price>9.90</price>
    <year>1982</year>
</cd>
</catalog>

```

Here is my XSLT:

```
<?xml version="1.0" encoding="utf-8"?>
<!-- DWXMLSource="Catalog.xml" -->
<!DOCTYPE xsl:stylesheet  [
<!ENTITY nbsp   "&#160;">
<!ENTITY copy   "&#169;">
<!ENTITY reg    "&#174;">
<!ENTITY trade  "&#8482;">
<!ENTITY mdash  "&#8212;">
<!ENTITY ldquo  "&#8220;">
<!ENTITY rdquo  "&#8221;"> 
<!ENTITY pound  "&#163;">
<!ENTITY yen    "&#165;">
<!ENTITY euro   "&#8364;">
]>
<xsl:stylesheet version="1.0" 
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

<xsl:output method="html" encoding="utf-8"/>

<xsl:template match="/">
<xsl:apply-templates />
</xsl:template>

<xsl:template match="catalog">
<xsl:apply-templates select="cd" />
</xsl:template>

<xsl:template match="cd">
  <p style="color:red;">
    <xsl:apply-templates select="title = 'Empire Burlesque'" />
  </p>
  <p style="color:blue;">
    <xsl:apply-templates select="artist = 'Bob Dylan'" />
  </p>
  <p style="color:green;">
    <xsl:apply-templates select="band/guitar = 'Joe'" />
  </p>
</xsl:template>

<xsl:template match="title">
Title: <xsl:apply-templates />    
</xsl:template>

<xsl:template match="artist">
Artist: <xsl:apply-templates />   
</xsl:template>

<xsl:template match="band/guitar">
Guitar: <xsl:apply-templates />   
</xsl:template>

</xsl:stylesheet>

```

The result I was expecting is:

```
Title: Empire Burlesque

Artist: Bob Dylan

Guitar: Joe

```