<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
    <xs:include schemaLocation="common-simple-types.xsd" />
    <xs:include schemaLocation="common-complex-types.xsd" />
    
    <xs:complexType name="artist">
        <xs:group ref="artist" />        
        <xs:attributeGroup ref="artist" />
        <xs:attributeGroup ref="artistExtended" />
    </xs:complexType>
    
    <xs:element name="response">
        <xs:complexType>
            <xs:sequence>
                <xs:group ref="response" />
                <xs:element name="artist" type="artist" minOccurs="0" />
            </xs:sequence>
        </xs:complexType>
    </xs:element>
</xs:schema>