Missing preview_url from some tracks

[brodin]

When working with a playback feature built upon the provided mp3 preview for a track I noticed that they sometime are missing - is this intended? The api documentation don't mention the possibility of this value being null, but maybe I am just reading it wrong?

Example request
GET /v1/tracks/6ZllZRW9urRfEUdmtMM3lE

Response:

{
  "album" : {
    "album_type" : "single",
    "available_markets" : [ ],
    "external_urls" : {
      "spotify" : "https://open.spotify.com/album/29tIrwlbkGnVxs3aQ4zIew"
    },
    "href" : "https://api.spotify.com/v1/albums/29tIrwlbkGnVxs3aQ4zIew",
    "id" : "29tIrwlbkGnVxs3aQ4zIew",
    "images" : [ {
      "height" : 640,
      "url" : "https://i.scdn.co/image/056e463114528a1e4c9eddbe804c284be45d3da0",
      "width" : 640
    }, {
      "height" : 300,
      "url" : "https://i.scdn.co/image/bdccfd4e9327cd12f1648fba5b3b163939600eea",
      "width" : 300
    }, {
      "height" : 64,
      "url" : "https://i.scdn.co/image/e8b95d8f337e66475bd9a02b08aa91715fc1c44e",
      "width" : 64
    } ],
    "name" : "Be Alright",
    "type" : "album",
    "uri" : "spotify:album:29tIrwlbkGnVxs3aQ4zIew"
  },
  "artists" : [ {
    "external_urls" : {
      "spotify" : "https://open.spotify.com/artist/66CXWjxzNUsdJxJ2JdwvnR"
    },
    "href" : "https://api.spotify.com/v1/artists/66CXWjxzNUsdJxJ2JdwvnR",
    "id" : "66CXWjxzNUsdJxJ2JdwvnR",
    "name" : "Ariana Grande",
    "type" : "artist",
    "uri" : "spotify:artist:66CXWjxzNUsdJxJ2JdwvnR"
  } ],
  "available_markets" : [ ],
  "disc_number" : 1,
  "duration_ms" : 177293,
  "explicit" : false,
  "external_ids" : {
    "isrc" : "USUM71601797"
  },
  "external_urls" : {
    "spotify" : "https://open.spotify.com/track/6ZllZRW9urRfEUdmtMM3lE"
  },
  "href" : "https://api.spotify.com/v1/tracks/6ZllZRW9urRfEUdmtMM3lE",
  "id" : "6ZllZRW9urRfEUdmtMM3lE",
  "name" : "Be Alright",
  "popularity" : 74,
  "preview_url" : null,
  "track_number" : 1,
  "type" : "track",
  "uri" : "spotify:track:6ZllZRW9urRfEUdmtMM3lE"
}

Here are some track ids that are missing a preview_url:

• 3uSGz0jJ1ejqKIIYYNRczu
• 4SYBIlsAV3BChdmBfokomL
• 6ZllZRW9urRfEUdmtMM3lE
• 6NCyxy0ymVNqJXTvcbgpoY
• 5jZKRKvidJuG9wBammhyMR

[jolantz]

+1

[brodin]

Just realised to search for closed issues and found this one #148 that explains the need for specifying market when searching for a track!