Largest single album in tracks number

.json

{
  "took" : 8,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "failed" : 0
  },
  "hits" : {
    "total" : 8486,
    "max_score" : 0.0,
    "hits" : [ ]
  },
  "aggregations" : {
    "per_album" : {
      "doc_count_error_upper_bound" : 0,
      "sum_other_doc_count" : 8401,
      "buckets" : [ {
        "key" : "Final Fantasy VIII - Original Soundtrack",
        "doc_count" : 74
      } ]
    }
  }
}