title: Amazon API: How to find album title for mp3 downloads?
body: <p>I am using the Amazon Web Services API to allow a search on my website for MP3 downloads. It works, returning title, artist, price, and various other statistics, but nowhere in the results is an album name. On Amazon's website, it lists album names for all downloads (<a href="http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias=digital-music&amp;field-keywords=u2%20joshua%20tree&amp;x=0&amp;y=0" rel="nofollow">example</a>) so the name obviously exists somewhere.</p>
  
  <p>Here are my arguments (signature and accesskey omitted):</p>
  
  <pre><code>&lt;Argument Name="Operation" Value="ItemSearch"/&gt;
  &lt;Argument Name="Service" Value="AWSECommerceService"/&gt;
  &lt;Argument Name="Count" Value="20"/&gt;
  &lt;Argument Name="Version" Value="2010-11-01"/&gt;
  &lt;Argument Name="Keywords" Value="u2 joshua tree"/&gt;
  &lt;Argument Name="Timestamp" Value="2011-06-30T23:10:40Z"/&gt;
  &lt;Argument Name="ResponseGroup" Value="ItemAttributes,Offers,Images"/&gt;
  &lt;Argument Name="SearchIndex" Value="MP3Downloads"/&gt;
  </code></pre>
  
  <p>I tried adding <code>RelatedItems</code> to the ResponseGroup, and <code>RelationshipType=AuthorityTitle</code> as another argument, but this gave me weird results that weren't even by U2. (page 143 of the API PDF version 2010-11-01 if you're curious)</p>
  
  <p>And here is the XML result for one of the songs, sorry it's hard on the eyes. This song is in the album "The Joshua Tree (Remastered)" (see "example" search above) but that is not listed anywhere.</p>
  
  <pre><code>&lt;Item&gt;
  &lt;ASIN&gt;B001NB6YKU&lt;/ASIN&gt;
  &lt;DetailPageURL&gt;
  http://www.amazon.com/Running-To-Stand-Still/dp/B001NB6YKU%3FSubscriptionId%3DAKIAJELHRUWLOWHPHOAQ%26tag%3Dws%26linkCode%3Dxm2%26camp%3D2025%26creative%3D165953%26creativeASIN%3DB001NB6YKU
  &lt;/DetailPageURL&gt;
  &lt;ItemLinks&gt;
  &lt;ItemLink&gt;
  &lt;Description&gt;Technical Details&lt;/Description&gt;
  &lt;URL&gt;
  http://www.amazon.com/Running-To-Stand-Still/dp/tech-data/B001NB6YKU%3FSubscriptionId%3DAKIAJELHRUWLOWHPHOAQ%26tag%3Dws%26linkCode%3Dxm2%26camp%3D2025%26creative%3D386001%26creativeASIN%3DB001NB6YKU
  &lt;/URL&gt;
  &lt;/ItemLink&gt;
  &lt;ItemLink&gt;
  &lt;Description&gt;All Customer Reviews&lt;/Description&gt;
  &lt;URL&gt;
  http://www.amazon.com/review/product/B001NB6YKU%3FSubscriptionId%3DAKIAJELHRUWLOWHPHOAQ%26tag%3Dws%26linkCode%3Dxm2%26camp%3D2025%26creative%3D386001%26creativeASIN%3DB001NB6YKU
  &lt;/URL&gt;
  &lt;/ItemLink&gt;
  &lt;ItemLink&gt;
  &lt;Description&gt;All Offers&lt;/Description&gt;
  &lt;URL&gt;
  http://www.amazon.com/gp/offer-listing/B001NB6YKU%3FSubscriptionId%3DAKIAJELHRUWLOWHPHOAQ%26tag%3Dws%26linkCode%3Dxm2%26camp%3D2025%26creative%3D386001%26creativeASIN%3DB001NB6YKU
  &lt;/URL&gt;
  &lt;/ItemLink&gt;
  &lt;/ItemLinks&gt;
  &lt;SmallImage&gt;
  &lt;URL&gt;
  http://ecx.images-amazon.com/images/I/41uvtenuwNL._SL75_.jpg
  &lt;/URL&gt;
  &lt;Height Units="pixels"&gt;69&lt;/Height&gt;
  &lt;Width Units="pixels"&gt;75&lt;/Width&gt;
  &lt;/SmallImage&gt;
  &lt;MediumImage&gt;
  &lt;URL&gt;
  http://ecx.images-amazon.com/images/I/41uvtenuwNL._SL160_.jpg
  &lt;/URL&gt;
  &lt;Height Units="pixels"&gt;146&lt;/Height&gt;
  &lt;Width Units="pixels"&gt;160&lt;/Width&gt;
  &lt;/MediumImage&gt;
  &lt;LargeImage&gt;
  &lt;URL&gt;
  http://ecx.images-amazon.com/images/I/41uvtenuwNL.jpg
  &lt;/URL&gt;
  &lt;Height Units="pixels"&gt;457&lt;/Height&gt;
  &lt;Width Units="pixels"&gt;500&lt;/Width&gt;
  &lt;/LargeImage&gt;
  &lt;ImageSets&gt;
  &lt;MerchantId&gt;A17SFUTIVB227Z&lt;/MerchantId&gt;
  &lt;ImageSet Category="primary"&gt;
  &lt;SwatchImage&gt;
  &lt;URL&gt;
  http://ecx.images-amazon.com/images/I/41uvtenuwNL._SL30_.jpg
  &lt;/URL&gt;
  &lt;Height Units="pixels"&gt;27&lt;/Height&gt;
  &lt;Width Units="pixels"&gt;30&lt;/Width&gt;
  &lt;/SwatchImage&gt;
  &lt;SmallImage&gt;
  &lt;URL&gt;
  http://ecx.images-amazon.com/images/I/41uvtenuwNL._SL75_.jpg
  &lt;/URL&gt;
  &lt;Height Units="pixels"&gt;69&lt;/Height&gt;
  &lt;Width Units="pixels"&gt;75&lt;/Width&gt;
  &lt;/SmallImage&gt;
  &lt;ThumbnailImage&gt;
  &lt;URL&gt;
  http://ecx.images-amazon.com/images/I/41uvtenuwNL._SL75_.jpg
  &lt;/URL&gt;
  &lt;Height Units="pixels"&gt;69&lt;/Height&gt;
  &lt;Width Units="pixels"&gt;75&lt;/Width&gt;
  &lt;/ThumbnailImage&gt;
  &lt;TinyImage&gt;
  &lt;URL&gt;
  http://ecx.images-amazon.com/images/I/41uvtenuwNL._SL110_.jpg
  &lt;/URL&gt;
  &lt;Height Units="pixels"&gt;101&lt;/Height&gt;
  &lt;Width Units="pixels"&gt;110&lt;/Width&gt;
  &lt;/TinyImage&gt;
  &lt;MediumImage&gt;
  &lt;URL&gt;
  http://ecx.images-amazon.com/images/I/41uvtenuwNL._SL160_.jpg
  &lt;/URL&gt;
  &lt;Height Units="pixels"&gt;146&lt;/Height&gt;
  &lt;Width Units="pixels"&gt;160&lt;/Width&gt;
  &lt;/MediumImage&gt;
  &lt;LargeImage&gt;
  &lt;URL&gt;
  http://ecx.images-amazon.com/images/I/41uvtenuwNL.jpg
  &lt;/URL&gt;
  &lt;Height Units="pixels"&gt;457&lt;/Height&gt;
  &lt;Width Units="pixels"&gt;500&lt;/Width&gt;
  &lt;/LargeImage&gt;
  &lt;/ImageSet&gt;
  &lt;/ImageSets&gt;
  &lt;ItemAttributes&gt;
  &lt;Binding&gt;MP3 Download&lt;/Binding&gt;
  &lt;Creator Role="Primary Contributor"&gt;U2&lt;/Creator&gt;
  &lt;Genre&gt;rock-music&lt;/Genre&gt;
  &lt;Label&gt;U2 /Island Catalog&lt;/Label&gt;
  &lt;Manufacturer&gt;U2 /Island Catalog&lt;/Manufacturer&gt;
  &lt;ProductGroup&gt;Digital Music Track&lt;/ProductGroup&gt;
  &lt;ProductTypeName&gt;DOWNLOADABLE_MUSIC_TRACK&lt;/ProductTypeName&gt;
  &lt;PublicationDate&gt;2007-11-20&lt;/PublicationDate&gt;
  &lt;Publisher&gt;U2 /Island Catalog&lt;/Publisher&gt;
  &lt;ReleaseDate&gt;2007-11-20&lt;/ReleaseDate&gt;
  &lt;RunningTime Units="seconds"&gt;257&lt;/RunningTime&gt;
  &lt;Studio&gt;U2 /Island Catalog&lt;/Studio&gt;
  &lt;Title&gt;Running To Stand Still&lt;/Title&gt;
  &lt;TrackSequence&gt;5&lt;/TrackSequence&gt;
  &lt;/ItemAttributes&gt;
  &lt;OfferSummary&gt;
  &lt;LowestNewPrice&gt;
  &lt;Amount&gt;99&lt;/Amount&gt;
  &lt;CurrencyCode&gt;USD&lt;/CurrencyCode&gt;
  &lt;FormattedPrice&gt;$0.99&lt;/FormattedPrice&gt;
  &lt;/LowestNewPrice&gt;
  &lt;TotalNew&gt;1&lt;/TotalNew&gt;
  &lt;TotalUsed&gt;0&lt;/TotalUsed&gt;
  &lt;TotalCollectible&gt;0&lt;/TotalCollectible&gt;
  &lt;TotalRefurbished&gt;0&lt;/TotalRefurbished&gt;
  &lt;/OfferSummary&gt;
  &lt;Offers&gt;
  &lt;TotalOffers&gt;0&lt;/TotalOffers&gt;
  &lt;TotalOfferPages&gt;0&lt;/TotalOfferPages&gt;
  &lt;/Offers&gt;
  &lt;/Item&gt;
  </code></pre>