Triggering music answer boxes relevant to user search queries

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for triggering music answer boxes. In one aspect, a method includes receiving a query, obtaining a plurality of search results responsive to the query, the search results being results from a search of web resources on the Internet, and determining from the plurality of search results that the query is a music query. Music data for a song responsive to the query is obtained, where the music data comprises a Uniform Resource Locator (URL) of song content of the song on the Internet. A music answer box is generated for the query, where the music answer box comprises the music data and a link to the URL of the song content, and the music answer box is provided in addition to search results.