declare namespace ernm = 'http://ddex.net/xml/ern/411';
(: declare context item := db:open('ddex'); :)

for $track_release in /ernm:NewReleaseMessage/ReleaseList/TrackRelease
where $track_release/ReleaseLabelReference/text() =
  /ernm:NewReleaseMessage/PartyList/Party/PartyReference/text()

for $party in /ernm:NewReleaseMessage/PartyList/Party
for $sound_recording in /ernm:NewReleaseMessage/ResourceList/SoundRecording
where $track_release/ReleaseResourceReference/text() = $sound_recording/ResourceReference/text()

for $release in /ernm:NewReleaseMessage/ReleaseList/Release
where $track_release/ReleaseResourceReference/text() = $release/ResourceGroup/ResourceGroup/ResourceGroupContentItem/ReleaseResourceReference/text()
return <identity>
  <isrc>{ $track_release/ReleaseId/ISRC/text() }</isrc>
  <artist>{ fn:string-join($sound_recording/DisplayArtistName, '/') }</artist>
  <title>{ $sound_recording/DisplayTitleText/text() }</title>
  <album>{ $release/DisplayTitleText/text() }</album>
  <icpn>{ $release/ReleaseId/ICPN/text() }</icpn>
  <sublabel>{ $party/PartyName/FullName/text() }</sublabel>
</identity>